Changing Transmission Oil

[John V]

I have had very good results with MT-90 over the years as well. However the Redline folks suggested to me that the best match for the Boxster S transaxle was their 75W90NS (non-slip) oil. I've had it in for about a year with no complaints. Some people, especially owners with B+M shifters, prefer the Redline "cocktail" which mixes the 75W90NS and Light Gear oil.