I think I finally found the cure for the oil consumption in my 94 Corolla; I've probably done half a dozen piston soaks with MMO, Seafoam etc. with varying results; the consumption sslows and then comes back. I recently did another soak with Berryman B12 Chemtool (STRONG STUFF), and refilled with Pennzoil Platinum HM 10w-30. After 3,000 miles, it's hardly burned a drop! I've had this car since 2002 when it had 70,000 miles and it's always burned oil; sometimes a quart every 1,000 miles. That has led to pretty bad combustion chamber deposits which lead to pinging. With the Pennzoil after doing the soak, I'm not getting any pinging at all. Just wanted to report. I'll continue using the Pennzoil HM synthetic - stuff seems to work and it seems to help clean out an engine/rings with deposits.
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