Trans Axle Oil

[Steve Tinker]

Exactly - most people will sell the car long before the Porsche oil goes out of spec.
Ummm, what am I saying - maybe a cheaper lube will suffice for most (?) people anyway,,,,,,
Its just that as you get older, quality really counts !!

[Idaho Red Rocket 3]

I'm heading that way myself. I used RedLine 75W90 when I changed both the Boxsters trans lube last time. Good stuff, but they are a little stiff when cold. Going OEM Porsche trans lube next time.

[shadrach74]

My dealer wants $67 a bottle for "their" product. I have a hard time believing that there is not an identical product under a different name. Porsche is not in petroleum business. Maybe they had a custom formulation put together, but I have my doubts...

I don't care what's in it, with tax just the fluid came to ~215$ and change, that is offensive.

[Homeboy981]

Brand A…Amsoil!

Running it with great results in engine and tranny. I got it for the price of regular Valvoline at Autozone! If you become a dealer they will give you even better prices. I got 3 quarts of Amsoil Synthetic 75w-90 transmission fluid shipped to the house for only $45.

Based on wear tests this is a superior product. Check it for your self! Hopefully, I can own the car long enough to change the tranny fluid again!

Thanks for the thread!