Probably. The top quart is just extra fill. Toyota's historically run very low oil pressure at idle (in a relative world) simply becuas ethey don't need a lot.
Less you start with a clean engine, flush the engine out, or start using dual filters, all oil is going to turn jet black at some point. Some in a few hundred miles. Color has nothing to do with how well it's working.
For years, Toyota also use to specified 10 month, 7,500 mile oil changes on the non heavy duty schedule.
If you ever bother to take a baseline sample, then analyze oil, you find out that even most poor dino oils will do 5,000 miles under most conditions before they start really showing signs of wear.
Check the compression, if you don't feel like that, drive it around & put a heavy load on the engine. Since high speed runs are fairly illegal in most places... A big hill on a dead start works!
__________________
Toysrme257th - AIM about anything, anytime; including v6 turbos.
World's second ES 300/3vz-fe Turbo.
|