[rfuerst911sc]

Interesting that they don't recommend synthetic engine oil , that seems to go against most conventional wisdom . And the internet research I did last night and this morning says unless towing leave the transmission fluid alone .

So now I am totally confused !!! It gets very hot here in the summer and I prefer the extra safety margin that synthetic oil provides . I guess I will find a 5W30 or 0W40 synthetic and try it . Thanks for the info you have provided .