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- Mar 4, 2026
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- 200
Might have temporarily solved oil consumption issue on 2AZFE 2007 Camry
So I have tried everything under the sun to try to rectify this situation other than piston soak. I never have the car for more than a few hours 1-2 times per year. It was wife's car now one of sons. He is away working on his masters.
So what has been tried in the past. Schaeffers 131, BG EPR, Varnasolv, CRC505, HPL Engine Cleaner, Kreen, Valvoline Restore and Protect 2-3X, Valvoline Restore and Protect + HPL Engine Cleaner 2quarts. Everything seemed to help along the way a little bit expect the CRO505.
So not the last oil change but the one before that I had Valvoline Restore and Protect in and I put 1/2 a bottle of Red Line S-1 Injector Cleaner in the crank case. I left it in for 3000 miles and suddenly unannounced the kid came home for help with wedding reception for a friend out of the blue. My wife and I both helped him with the wedding reception planing and other associated issues, I changed the oil and checked the car over and he was off again.
Fast forward and the car has not used any oil that can be discerned on the dipstick. This is a car that was using 8 quarts of synthetic oil between OEM change intervals of 5000 miles or less.
Since I did not know he was coming home I know I did not use Valvoline Restore and Protect 5W30 because I was mostly purchasing it for his car at the time. I would have used what I have on hand which means it was either Mobil 1 0W40 or it was Mobil 1 Delvac Extreme Full Synthetic 10W30. I think I likely would have put the latter in at the time since I had a ton of it and I got it at a steal. I have been using it in anything I do not think is worth expensive oils since I got a great deal on it.
Since I did not expect him home I did not even have a sample bottle handy.
I originally got the idea to try Red Line S-1 in the crankcase because of Yamaha's Ring Free Product that can be used in fuel and crankcase. Also when a car is burning 8 quarts over an oil change interval what have you got to lose. Obviously I know the design flaw is still present but it is interesting that it not only worked but worked so dramatically.
Should the problem begin to reoccur I will hopefully be able to get the car for a full 24 hours or more so I can pull the plugs and do piston soak on it. I won't pull spark plugs on a hot aluminum cylinder head. Seen it end badly too many times for too many people including dealerships. I know a lot of people do it. I once had it pull the threads out of head in the middle of a third world country. The poor excuse for a Heli-Coil or Time Cert was insidious, archaic and worthy of an infomercial that I had to use to get it back on the road. This was in the early 1990's in Africa. I have never done it since!
So I have tried everything under the sun to try to rectify this situation other than piston soak. I never have the car for more than a few hours 1-2 times per year. It was wife's car now one of sons. He is away working on his masters.
So what has been tried in the past. Schaeffers 131, BG EPR, Varnasolv, CRC505, HPL Engine Cleaner, Kreen, Valvoline Restore and Protect 2-3X, Valvoline Restore and Protect + HPL Engine Cleaner 2quarts. Everything seemed to help along the way a little bit expect the CRO505.
So not the last oil change but the one before that I had Valvoline Restore and Protect in and I put 1/2 a bottle of Red Line S-1 Injector Cleaner in the crank case. I left it in for 3000 miles and suddenly unannounced the kid came home for help with wedding reception for a friend out of the blue. My wife and I both helped him with the wedding reception planing and other associated issues, I changed the oil and checked the car over and he was off again.
Fast forward and the car has not used any oil that can be discerned on the dipstick. This is a car that was using 8 quarts of synthetic oil between OEM change intervals of 5000 miles or less.
Since I did not know he was coming home I know I did not use Valvoline Restore and Protect 5W30 because I was mostly purchasing it for his car at the time. I would have used what I have on hand which means it was either Mobil 1 0W40 or it was Mobil 1 Delvac Extreme Full Synthetic 10W30. I think I likely would have put the latter in at the time since I had a ton of it and I got it at a steal. I have been using it in anything I do not think is worth expensive oils since I got a great deal on it.
Since I did not expect him home I did not even have a sample bottle handy.
I originally got the idea to try Red Line S-1 in the crankcase because of Yamaha's Ring Free Product that can be used in fuel and crankcase. Also when a car is burning 8 quarts over an oil change interval what have you got to lose. Obviously I know the design flaw is still present but it is interesting that it not only worked but worked so dramatically.
Should the problem begin to reoccur I will hopefully be able to get the car for a full 24 hours or more so I can pull the plugs and do piston soak on it. I won't pull spark plugs on a hot aluminum cylinder head. Seen it end badly too many times for too many people including dealerships. I know a lot of people do it. I once had it pull the threads out of head in the middle of a third world country. The poor excuse for a Heli-Coil or Time Cert was insidious, archaic and worthy of an infomercial that I had to use to get it back on the road. This was in the early 1990's in Africa. I have never done it since!
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