Originally Posted By: CATERHAM
Originally Posted By: teddyboy
CATERHAM: I'm curious as to why you use the 5W30/0W40 blend in your Porsche? And also, what are the proportions?
It's an approximate 30/70 blend.
The 0W-40 is heavier than necesary for the way I drive my Porsche (no track use). I used some M1 5W-30 only because I had some on hand.
For my next oil change, which won't be for a while, I'll probabily use the Toyota 0W-20 but only half as much if I use the USA sourced SN M1 0W-40. If I use the lighter Cdn SM version of M1 0W-40 I may not bother to lighten it any further at all.
In my climate, it probably makes sense to just run all 0W40. If nothing else, it lets me feel that I'm protecting the turbo in my Volvo, even if it's a false security. BTW, I wasn't offended by your response to my admittedly stupid question.