I am in the process of an ARX cleaning cycle in my Jeep 4.0L Inline 6 engine right now. It holds a little more than 5 qts of oil. My wife's Nissan Xterra holds a good bit less than 4 qts of oil. If I do an ARX cleaning cycle on the Xterra should I adjust the amount of ARX I put in it. 25% (or so) less oil capacity seems like a different treatment is required to me...........
You could adjust the amount, but you don't have to (I added 9 oz of ARX to the 3.5 qts in our Honda). The ARX is not adding oil volume, it is using the oil to be spread throughout the engine.
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2001 Ford Ranger, 4.0 V6. Mobil 1 0w-30, Motorcraft FL 820s filter, 3oz Auto Rx
Let me just throw out an observation. My brother-in-law and I are doing a ARX double dose test on a '91 Geo Storm. He changed the oil and filter, took compression readings prior to adding ARX. We took a dipstick reading, it was a little above full. Added two bottles (24 oz.) of ARX and then took another dipstick reading prior to starting the engine. It now looked to be a full quart above the full mark on the dipstick. Took the vehicle on a 30+ mile drive then took another dipstick reading. It was still a full quart above the full mark.
