Originally Posted By: MrQuackers
Very shortly, I will be doing my second piston soak on my '93 SL2 currently @ 163k miles. I hope my rings are OK. The vehicle performa very well and does not leave a spy hunter clould when gunning it on the highway. I did my first soak at 153k miles and the oil consumption moderately improved. I can and have registered 40 mpg on highway tripa so the vehicle is in good repair. Use was about 1800 miles per quart, not bad. This OCI the use is ~1500 miles per quart but I started with 20 ounces of MMO with Mobil 1 5w-30 and expected use to increase.
Sounds like my sons saturn. I could get 45mpg hwy with his sc1 manual trans( glasspack exhaust). No smoke , you would not know it burned oil as it had good compression, therefore it burned the oil cleanly at 1 quart in 400miles. The oil control rings just lose tension, while the upper rings maintain good compression.