Quote:
Originally Posted by nis350
The darker color of the oil indicates that its detergent is doing its job and it is not an indication of its effectiveness.
There are quite a few performance cars use M-1 full sync as factory fill and the oci is more than 10k miles.
However, it doesn't hurt anything if change at 5k miles.
|
^^^^ This guy.
The myth of discolored oil being a BAD thing is still strong. Oil is a lubricant and also a cleaner - it's SUPPOSED to look dirty.