Well if that is the case then it would be extremely important not to use engine oils with redundant levels of additives that may harm the emission control equipment.
One litre per 3,000 KM, or one US qt per 2000 miles would be considered "self changing".
With an engine like that, why not simply change the filter every 12,000 miles or one year (or 20,000 km) and forget complete oil changes for two or three years?
In contrast, a ten year old 454 pulling a horse trailer might burn a quart every 2,000 miles, but a little 3,000 lb car and driver?
What is the average oil consumption of a new one ton truck weighing 7,000 lbs?
According to Buster's own post about 6 weeks ago, the little Toyota did not consume oil until the Tupperware oil, I mean Red Line and Rx went in.
[ November 28, 2003, 06:02 PM: Message edited by: userfriendly ]