I am sure the Oil debate has been beaten to death but I am still not sure of what to put in my box. I was all ready to go get some synthetic oil and do my change, then I got stupid and googled the subject. Good frickin God, I found it harder the chooese the oil than to change it.

In my extensive research I have discovered a few things. Never, Ever use xxW30. Most stores don't carry xxW40, which is the oil of choice for experts.

My box is a 2001 "S" with 60k miles. I have it narrowed down between 2 oils that are available in my limited area. Mobil 1 10w40 high milage, and Catrol syntec xxW40.

Any quick thoughts on the Highmilage mobile?

 

I use 0W-40 mobil 1, My car has 110,000 miles. drive the car 100 miles everyday.
joel

 

40K on my 05 Boxster S. Sticker says 0-40 Mobil synthetic.

 

just did my oil change and used Castrol syntec 10W40. It came down between that and Mobil 10W40 High milage. none of my stores have W40. They are all W30 (even walmart).

 

You can put 0w40 mobile one, or a 5w50 , and a 5w40 as well but all of these have to be synthetic of course. The only reason for the 0w is due to the tight seals inside of the case and possibly the cold weather if you are around it!

 

0w40