I own a Skoda Octavia with a 1.6 liter 75 kW engine. I didn't use anything except 0w-40 Mobile1 oil and I changed it every 30 000 km since it fulfills VW503.01 long-life oil standard. I bought it with 46000 km on the clock and didn't experience any problems with oil burning until I reached approximately 80 000 km. The oil burning problem may have developed for two different reason. During service, a service guy added 1 liter of an ordinary mineral oil on top of three liters of Mobile1 0w-40. I considered that it is not a big deal and that nothing will happen if I change that oil at 15 000 km. The second reason that could have lead to the problem is that I drive my car on short trips, 10-15 km in a very eco way accelerating slowly and changing gears as soon as engine reaches 1800 rpm.
After the oil change with 3 liters of synthetic and 1 liter of mineral, I noticed that the oil level is dropping, but I didn't want to react since I was going anyway to change that oil after approximately 15 000 km. Once the oil level reached the minimum, I thought that it is OK and that it's better to run an engine on a lower oil level during winter since the engine warms up faster. After the oil-level dropped couple of millimeters below the minimum I decided to change the "mixed" oil and fill in the fresh one. However, I was unpleasantly surprised when I discovered "mayonnaise" on the oil cap that I didn't get to see on this car before. I cleaned the "mayonnaise" and switched to Castrol Edge 5w30 that complies with the latest VW504.00/VW507.00 hopping that the "mayonnaise" problem will vanish. At the time, I considered only the "mayonnaise" as a problem since I thought that the slow oil-consumption will disappear as soon as I fill in the fresh oil.
Well, the problem did not disappear and the oil-consumption was as high as 0.8 liter per 1000 km. That is very similar to what I've experienced before with Fiat Tipo 1.4 I owned before. I have to admit that the most probable reason for this problem are my driving habits and eco driving style. VW/Skoda manual says that this is something "normal" and that this can happen if the car is used on short trips. Well, I didn't want to waste my money on expensive oil and wanted to fix this problem, which is considered as a normal engine behavior by VW/Skoda. After only 5000 km driving with this oil, I changed the oil to Mobile1 5w-30 ESP complying to the same VW standards as Castrol I mentioned before. Unfortunately, nothing changed and the engine was burning oil heavily. The fun part is that there was no blue smoke out of the exhaust pipe and I was wondering where did it go? There were no leaks either and it was driving me crazy.
Having that problem with my car, I went to summer vacation by car, driving 2000 km mostly on highways across Europe just to get there. During this long trip, the engine used only 0.3 liters of oil and it seamed that it improved significantly. However, as soon as I started driving short trips during the vacation, the engine started drinking oil again. I found a cheap mechanic who did the compression test. He said that the compression is OK, and that the only other place except the pistons and rings where the oil could escape to the burning camber is through the valve seals. I witnessed how the engine was dirty inside when he opened it to replace the valve seals. The amount of sludge was unbelievable. At the time, I didn't know that could be a problem. He changed the valve seals, and ... the same problem again.
When I got back home, I changed the oil after using it only for 8000 km instead of 30 000km and noticed that the oil was dirty beyond imagination. It was not only it's color that was scary, but the amount of "sand" it was carrying. It looked grainy when I poured it out. I filled the engine again with a somewhat thicker Mobil1 0w-40 and the oil consumption dropped to almost acceptable 0.3 liter/1000 km. At that time I still thought that there is some kind of an invisible oil leak and I decided to add Wynn's engine stop leak, since it complies with synthetic oils. The oil consumption dropped slightly, but not completely.
Shortly after that, I discovered Auto-RX during my quest to find something that will help my engine. Back then I realized that the sludge I saw in my engine is the problem I should get fixed, but considering it's amount I didn't dare to use any of the flushes. When I read that Auto-RX is cleaning it slowly, I decided to give it a try.
I mixed Auto-RX with the cheapest mineral oil with 10w-40 specs. I decided to go for "heavy oil burning application" of Auto-RX. Since I used only the best oils, I have to admit that I didn't feel comfortable with a bad mineral oil in my car's engine. Furthermore, I changed my driving style and during each drive I tried to get some fast accelerations reaching high rpm in second and/or third gear, but only when engine gets quite warm (after 10-15 minutes of driving). The last winter was very cold and long and I was driving mostly short trips. Not nice when you have mineral oil in your car's engine. I pulled a 1000 km trip on one day during the cleaning phase and the engine didn't burn any oil at all. It was really nice to discover that the oil burning problem is almost gone. Unfortunately, there was still some oil consumed during the short trips. I have to remark that the oil was not getting dirty quickly. I thought that it was going to get black after a 100 km run during the cleaning phase. There was maybe not too much sludge left after the frequent oil change.
However, I thought that the oil burning may come back again during the cleaning phase. The oil-burning reappeared during the first part of the cleaning phase and the oil was consumed more during long trips on highways. Interestingly, the oil consumption during short trips was almost gone. I've checked the oil level every 50 km. I didn't want to miss anything. One thing that I have noticed is that the measured oil level is the same after 1 minute and after 10 minutes of the engine stop. Before, one had to wait at least 15 minute to get it to the final level.
During the rinse phase, the oil consumption during the short trips was almost gone, while it increased during long trips on highway. This was opposite to what I experienced before. I addressed this issue to a poor quality mineral oil which is not able to perform well during a constant high-speed drive at 3800-4250 rpm in fifth gear. I was really careful with the oil measurements during the last period of the rinse phase when i changed the filter oil for the last time during clean/rinse oil-burning application. I had the opportunity to use the car for 2000 km driving only short trips. This was a real test for the success of the application. Before, running my car on an expensive synthetic oil, the oil consumption was reaching 0.8 liters/1000 km, and during those 2000 km on the clean phase, the oil consumption was completely gone. That was the first time I really felt that the problem is gone. Before the finish of this Auto-RX application, I decided to stretch the cleaning phase a bit just to test the car on a highway. The last test showed some oil burning, but this time I was confident that it is due to the poor performance of mineral oil when running on very high temperatures.
When I added new synthetic oil, I decided to test it on the highway before adding the Auto-RX maintenance dose. I was driving my car on high revs/high speed/max acceleration for 400 km on a highway and there was no evidence of oil burning. Now, completely confident that the problem is gone, I've added the maintenance dose of Auto-RX.
I was on the way to sell my car and I wanted to give it a try to fix it. I love my car since it is very reliable. During the 75000 km of experience with this car, the only thing I've replaced were rear brake cylinders and the car deserved to give it some more effort to get it fixed. There are a lot of lessons I've learned during the process of fixing the problem. I don't use any expensive synthetic oils any more. I'm just looking for an lesser known group IV based VW502.00 motor oil to mix it up with the maintenance dose of Auto-RX. This will reduce the fuel consumption and clean my engine while I drive. Furthermore, a 5w-40 PAO based oil is excellent for both cold start and driving on the highway. My driving habits do not allow long oil change intervals since I drive my car every day on very short trips. There is no oil that I know that will prevent building sludge inside the engine in this case. I drive my car a bit more aggressive now and I never run it below 2000 rpm any longer. People who "mistreat" their car's engines with aggressive drive never have the problem with "mayonnaise" on the oil cap and the sludge. The engine is designed to reach high temperatures and high revs, but the oil is not designed not to reach each it's working temperature. One has to make sure that the oil gets up to the proper temperature and that the condensed water in the engine finds it's way out during almost every drive. If you drive your car with max 25 minute trips while driving it carefully, then your oil does not get hot enough and the condensed water remains inside during the cold days. This will develop the sludge and "mayonnaise" problems.
I sincerely recommend Auto-RX since it fixed the heavy oil-burning problem with my car and helped to get rid of the sludge deposits. The best part of using Auto-RX is that you can be very much safe that it will not damage your car. It cleans your engine while you drive, while obtaining excellent fuel consumption. When I buy a second-hand car next time, the first thing I'll do is the cleaning with Auto-RX.
Tarik
-- Edited by Frank Miller on Monday 3rd of May 2010 10:05:05 AM
I own a Skoda Octavia with a 1.6 liter 75 kW engine. I didn't use anything except 0w-40 Mobile1 oil and I changed it every 30 000 km since it fulfills VW503.01 long-life oil standard. I bought it with 46000 km on the clock and didn't experience any problems with oil burning until I reached approximately 80 000 km. The oil burning problem may have developed for two different reason. During service, a service guy added 1 liter of an ordinary mineral oil on top of three liters of Mobile1 0w-40. I considered that it is not a big deal and that nothing will happen if I change that oil at 15 000 km. The second reason that could have lead to the problem is that I drive my car on short trips, 10-15 km in a very eco way accelerating slowly and changing gears as soon as engine reaches 1800 rpm.
After the oil change with 3 liters of synthetic and 1 liter of mineral, I noticed that the oil level is dropping, but I didn't want to react since I was going anyway to change that oil after approximately 15 000 km. Once the oil level reached the minimum, I thought that it is OK and that it's better to run an engine on a lower oil level during winter since the engine warms up faster. After the oil-level dropped couple of millimeters below the minimum I decided to change the "mixed" oil and fill in the fresh one. However, I was unpleasantly surprised when I discovered "mayonnaise" on the oil cap that I didn't get to see on this car before. I cleaned the "mayonnaise" and switched to Castrol Edge 5w30 that complies with the latest VW504.00/VW507.00 hopping that the "mayonnaise" problem will vanish. At the time, I considered only the "mayonnaise" as a problem since I thought that the slow oil-consumption will disappear as soon as I fill in the fresh oil.
Well, the problem did not disappear and the oil-consumption was as high as 0.8 liter per 1000 km. That is very similar to what I've experienced before with Fiat Tipo 1.4 I owned before. I have to admit that the most probable reason for this problem are my driving habits and eco driving style. VW/Skoda manual says that this is something "normal" and that this can happen if the car is used on short trips. Well, I didn't want to waste my money on expensive oil and wanted to fix this problem, which is considered as a normal engine behavior by VW/Skoda. After only 5000 km driving with this oil, I changed the oil to Mobile1 5w-30 ESP complying to the same VW standards as Castrol I mentioned before. Unfortunately, nothing changed and the engine was burning oil heavily. The fun part is that there was no blue smoke out of the exhaust pipe and I was wondering where did it go? There were no leaks either and it was driving me crazy.
Having that problem with my car, I went to summer vacation by car, driving 2000 km mostly on highways across Europe just to get there. During this long trip, the engine used only 0.3 liters of oil and it seamed that it improved significantly. However, as soon as I started driving short trips during the vacation, the engine started drinking oil again. I found a cheap mechanic who did the compression test. He said that the compression is OK, and that the only other place except the pistons and rings where the oil could escape to the burning camber is through the valve seals. I witnessed how the engine was dirty inside when he opened it to replace the valve seals. The amount of sludge was unbelievable. At the time, I didn't know that could be a problem. He changed the valve seals, and ... the same problem again.
When I got back home, I changed the oil after using it only for 8000 km instead of 30 000km and noticed that the oil was dirty beyond imagination. It was not only it's color that was scary, but the amount of "sand" it was carrying. It looked grainy when I poured it out. I filled the engine again with a somewhat thicker Mobil1 0w-40 and the oil consumption dropped to almost acceptable 0.3 liter/1000 km. At that time I still thought that there is some kind of an invisible oil leak and I decided to add Wynn's engine stop leak, since it complies with synthetic oils. The oil consumption dropped slightly, but not completely.
Shortly after that, I discovered Auto-RX during my quest to find something that will help my engine. Back then I realized that the sludge I saw in my engine is the problem I should get fixed, but considering it's amount I didn't dare to use any of the flushes. When I read that Auto-RX is cleaning it slowly, I decided to give it a try.
I mixed Auto-RX with the cheapest mineral oil with 10w-40 specs. I decided to go for "heavy oil burning application" of Auto-RX. Since I used only the best oils, I have to admit that I didn't feel comfortable with a bad mineral oil in my car's engine. Furthermore, I changed my driving style and during each drive I tried to get some fast accelerations reaching high rpm in second and/or third gear, but only when engine gets quite warm (after 10-15 minutes of driving). The last winter was very cold and long and I was driving mostly short trips. Not nice when you have mineral oil in your car's engine. I pulled a 1000 km trip on one day during the cleaning phase and the engine didn't burn any oil at all. It was really nice to discover that the oil burning problem is almost gone. Unfortunately, there was still some oil consumed during the short trips. I have to remark that the oil was not getting dirty quickly. I thought that it was going to get black after a 100 km run during the cleaning phase. There was maybe not too much sludge left after the frequent oil change.
However, I thought that the oil burning may come back again during the cleaning phase. The oil-burning reappeared during the first part of the cleaning phase and the oil was consumed more during long trips on highways. Interestingly, the oil consumption during short trips was almost gone. I've checked the oil level every 50 km. I didn't want to miss anything. One thing that I have noticed is that the measured oil level is the same after 1 minute and after 10 minutes of the engine stop. Before, one had to wait at least 15 minute to get it to the final level.
During the rinse phase, the oil consumption during the short trips was almost gone, while it increased during long trips on highway. This was opposite to what I experienced before. I addressed this issue to a poor quality mineral oil which is not able to perform well during a constant high-speed drive at 3800-4250 rpm in fifth gear. I was really careful with the oil measurements during the last period of the rinse phase when i changed the filter oil for the last time during clean/rinse oil-burning application. I had the opportunity to use the car for 2000 km driving only short trips. This was a real test for the success of the application. Before, running my car on an expensive synthetic oil, the oil consumption was reaching 0.8 liters/1000 km, and during those 2000 km on the clean phase, the oil consumption was completely gone. That was the first time I really felt that the problem is gone. Before the finish of this Auto-RX application, I decided to stretch the cleaning phase a bit just to test the car on a highway. The last test showed some oil burning, but this time I was confident that it is due to the poor performance of mineral oil when running on very high temperatures.
When I added new synthetic oil, I decided to test it on the highway before adding the Auto-RX maintenance dose. I was driving my car on high revs/high speed/max acceleration for 400 km on a highway and there was no evidence of oil burning. Now, completely confident that the problem is gone, I've added the maintenance dose of Auto-RX.
I was on the way to sell my car and I wanted to give it a try to fix it. I love my car since it is very reliable. During the 75000 km of experience with this car, the only thing I've replaced were rear brake cylinders and the car deserved to give it some more effort to get it fixed. There are a lot of lessons I've learned during the process of fixing the problem. I don't use any expensive synthetic oils any more. I'm just looking for an lesser known group IV based VW502.00 motor oil to mix it up with the maintenance dose of Auto-RX. This will reduce the fuel consumption and clean my engine while I drive. Furthermore, a 5w-40 PAO based oil is excellent for both cold start and driving on the highway. My driving habits do not allow long oil change intervals since I drive my car every day on very short trips. There is no oil that I know that will prevent building sludge inside the engine in this case. I drive my car a bit more aggressive now and I never run it below 2000 rpm any longer. People who "mistreat" their car's engines with aggressive drive never have the problem with "mayonnaise" on the oil cap and the sludge. The engine is designed to reach high temperatures and high revs, but the oil is not designed not to reach each it's working temperature. One has to make sure that the oil gets up to the proper temperature and that the condensed water in the engine finds it's way out during almost every drive. If you drive your car with max 25 minute trips while driving it carefully, then your oil does not get hot enough and the condensed water remains inside during the cold days. This will develop the sludge and "mayonnaise" problems.
I sincerely recommend Auto-RX since it fixed the heavy oil-burning problem with my car and helped to get rid of the sludge deposits. The best part of using Auto-RX is that you can be very much safe that it will not damage your car. It cleans your engine while you drive, while obtaining excellent fuel consumption. When I buy a second-hand car next time, the first thing I'll do is the cleaning with Auto-RX.
Tarik
-- Edited by Frank Miller on Monday 3rd of May 2010 10:05:05 AM
