Originally Posted By: Gary Allan
It's not unique. Saturn users also have limited success with altering oil consumption that's due to design characteristics. Their usage is for different reasons, but you can't compensate for design flaws. The most you could have expected is temporary relief, and even that would be questionable.
Not so fast. I've done the MMO piston soak on 2 Saturn 1.9L twin-cam engines. The first one had the dreaded clogged bleed hole in the timing chain tensioner and I could hear the chain slapping. It was also burning a quart of oil every 1000 miles or so. This engine got an overnight MMO piston soak and then 750 miles driven with 1qt of MMO in the crankcase. The chain slap stopped and oil consumption was reduced to approximately 1qt every 3000 miles.
The other 1.9L engine got the piston soak treatment overnight TWICE over the course of about a week. The remnants of the 32oz bottle of MMO were thrown into the crankcase and it was topped off with "whatever was cheapest at Autozone that day" conventional oil. It was driven about 1000 miles and the oil/filter were changed. On the next 5000 mile oil change using Mobil1, it was down only about .5qt.
Not the most scientific study, for sure, but I'm sold on MMO piston soaks working for the old Saturn 1.9L engines with gummed/coked rings.
Best regards,
It's not unique. Saturn users also have limited success with altering oil consumption that's due to design characteristics. Their usage is for different reasons, but you can't compensate for design flaws. The most you could have expected is temporary relief, and even that would be questionable.
Not so fast. I've done the MMO piston soak on 2 Saturn 1.9L twin-cam engines. The first one had the dreaded clogged bleed hole in the timing chain tensioner and I could hear the chain slapping. It was also burning a quart of oil every 1000 miles or so. This engine got an overnight MMO piston soak and then 750 miles driven with 1qt of MMO in the crankcase. The chain slap stopped and oil consumption was reduced to approximately 1qt every 3000 miles.
The other 1.9L engine got the piston soak treatment overnight TWICE over the course of about a week. The remnants of the 32oz bottle of MMO were thrown into the crankcase and it was topped off with "whatever was cheapest at Autozone that day" conventional oil. It was driven about 1000 miles and the oil/filter were changed. On the next 5000 mile oil change using Mobil1, it was down only about .5qt.
Not the most scientific study, for sure, but I'm sold on MMO piston soaks working for the old Saturn 1.9L engines with gummed/coked rings.
Best regards,