When I got my bottle of Auto Rx, the old application was the deal. 1500 mile clean phase followed by 2000 mile rinse. Shortly after I started the rinse, the application changed to the new "spec" - 2500 mile clean and 3000 mile rinse. Frank advised me to extend my rinse to the new 3000 mile standard, which I did. I just completed the rinse. I changed the oil to Mobil 1 5w-30, used a Motorcraft FL 820s oil filter, added 3oz of Auto Rx, and changed the PCV valve. The vehicle is a 2001 Ford Ranger (4.0 SOHC V6) with 81,000 miles on it. The truck's OCI schedule was almost religious - 3000 mile changes with Castrol GTX 5w-30 (for the first 50,000 miles) followed by 5000 mile changes with Mobil 1 5w-30. I ca hardly wait to see what happens! I always felt that the motor should be clean, so I don't really know what to expect. The truck got a pretty consistent, and disappointing, 16 mpg - so I hope to see an improvement. Our 99 Honda Civic is about 250 miles into the clean phase.
__________________
2001 Ford Ranger, 4.0 V6. Mobil 1 0w-30, Motorcraft FL 820s filter, 3oz Auto Rx
We changed the application mileage because test data showed real gains in performance & MPG. The results will show within 100 miles after your done with application. i am looking forward to your post.
Well I just got gas for the first time after finishing the rinse phase. I've driven 178 miles (I know that's a short run) since changing the oil to Mobil 1 5w-30, added 3oz of Auto Rx, a new Motorcraft FL 820s oil filter, and a new PCV valve. I got 14.5 mpg, this thing got a consistent 16mpg before I started. I'm assuming/hoping that it takes a few more miles to see a difference (though I can't figure out why), so I'll post the results after my next gas purchase. The engine "feels" smoother and sure sounds quieter, so I'm hopeful that the benefits are around the corner! My air filter (Wix) only has about 11,000 miles on it and looks great, so I doubt that would make a difference. The only thing I can think of is "winter blend" gas, but my mileage was better even with that.
__________________
2001 Ford Ranger, 4.0 V6. Mobil 1 0w-30, Motorcraft FL 820s filter, 3oz Auto Rx
The MPG should increase after ARX. cleaning it may take a tank of gas or two any increas is a plus with gas around here at $3.15 gal thanks for purchasing Auto-Rx the best non solvent and safe cleaner for engines produced in the world.
Just filled up last night, 14.6 mpg. I'm hoping that the combination of winter blend fuel and the constant use of defrost/heat (with engages the A/C compressor) is the deal. Although mpg has not been very good, the engine feels very smooth and sounds very quiet.
__________________
2001 Ford Ranger, 4.0 V6. Mobil 1 0w-30, Motorcraft FL 820s filter, 3oz Auto Rx
