Quote:
Originally Posted by Jakins
speaking of which. i put like 2/3 of a quart of marvelous mystery oil in on my last oil change. for the past 150K miles the oil has been black. now after this oil change it is crystal clear.
|
How much oil is your car using? It's normal for cars to use some oil over time.
My old Subaru used a quart every 2000 miles from the day I got her at 119,000 miles. Oil use increased significantly when I used 10W 30, and decreased when I used 10W 40.
The higher viscosity will usually leak more slowly and protect the engine better, at the cost of a marginal amount of fuel economy.