Z Oil Change: Miles or Time?

kannibul

M1 Extended Performance 15K is a full syn...it's what I've used...including their filters.

Even then...I don't have any reason to think M1 won't deliver as good or better when compared to what is also commonly available (ie, walmart).

With redline and such, I worry about the ester base absorbing too much moisture and so on, that they were designed for 1-2 races before being changed out. I know races are hard on the engines, but, my point being is that, for the long term (3750 or more miles / 3 or more months), that it won't do as well as something like M1 or similar oils.

FricFrac

Ester absorbing water is based on its % which is why its blended the way it is in the Nissan Ester oil. That oil in not designed to be changed out after a very short usage period.

A good rule of thumb though regardless of what oil you use is to change twice a year regardless of milage. This is to avoid moisture build up (dino or synthetic). Typically people do this Spring/Fall as most light useage vehicles are driven more frequently or only during the summer months so a change at the begining of the "driving season" and the end is prudent.

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'09 370Z - '93 300ZX Vert - '83 280ZX - '83 280ZXT -'81 280ZXT stroker - '72 240Z - Stillen CBE, HFC, G3, Grounding Kit, Sways // Swift Spring // H&R 15mm // 5% Tint // Clear Bra //