I have a 2005 Toyota Highlander 4 cyl. Prior to Auto RX usage oil would never go down on the dipstick between oil changes. Oil & filter were changed every 3,000 miles with 5w-30
At 95k miles I changed the oil and filter and added 1 12oz container of Auto RX. (clean) 98K - Oil and filter (rinse) 101k - Oil, filter, Auto RX (clean) 105k - Oil, filter (rinse)
So I am at 109k and I have consumed about 3/4 of a quart in 4k miles. I know that may not sound like a lot but I consumed NO OIL AT ALL before using Auto RX. Thoughts are greatly appreciated.
Also I am thinking about going synthetic but I know synthetic will not give the seals what they need to make a good seal again. Should I wait until I get the consumption under control? Is synthetic bad for seals?
