It's time for a oil change I have 18,000 miles on my 2001 996TT currently using 0/40 Mobil1 I live in Phoenix Az what are you guys running during the hot summers or should I just stick to 0/40 weight Mobil1? Thanks for any feedback.

 

That weight is fine, but I would change it again after summer is over.

 

Porsche doesn't recommend you change it, why change it?

 

0-40W, Oil thins as oil temps increase. You want a higher (40w) for hot / hotter climate. For the colder months you want the lower (0) so that oil is not like molasses when starting the engine and running during sub-zero temps. Stick with Porsche's recommendation.

 

M1 5 W 50. It's Porsche approved and thicker than the 0 W 40

 

What kind of driving do you do?

M1 5-50 is a great oil (as Paulunm mentioned) and will serve you well if you drive hard for extended periods in a hot climate.

A

 

What he said.

 

+1 for 5W50 Mobil 1, especially in Arizona.

 

It's my daily driver so mainly 10-15 miles one way but also a lot of shorter drives too.

 

Thanks for the feedback guys!

 

I mix 6 botles of M1 0-40 with 3 botles of M1 15-50. The engine now is a bit quieter...

 

I change mine a bit more frequent than the recommendation. Since i drive 2000 miles a year, i change the oil twice a year along with the oil/air filter. A habit i have from the air cooled engine days.

When I drive her, she gets driven fast but not abused. Frequent oil changes gives me added protection. Engine stays strong. These engines abuse oil.