I have a 2000 C2 cab, and in the manual it states full synthetic 15w/50 as an approved oil above 50 degrees. I have located 15w/50 Mobil1 and am planning on using it for my next oil change. It seems it would be superior to lighter weights (especially 0w/40) for protection of the IMS bearing, as well as harder to leak past the trouble prone RMS. Am I correct, or has Porsche rescinded this recommendation for the MY 2000 Carrera? Thanks for the help.

 

I have 2000 986 and moved from 15-50 to 0-40 and so far so good, I believe the 0-40 is getting the better results overall.

For 996TT 5-50 is the concensus for less chain noice.

 

Frissen, did you have any problems with the 15w/50? Did you notice any noise from the lifters? How was your oil pressure? Why did you decide to go to the much lighter viscosity oil?

 

Nothing but 15-50 here.

 

Mother, thanks for the input. You are using the 15w/50 Mobil1 in what year and model pcar? Any concern or items of note that you have to report such as start-up lifter noise, abnormally high oil pressure when cold, etc.? Thanks for the help.

 

I have a 2000 996 and I get a little lifter noise on initial start-up for few seconds and oil pressures are probably higher then normal for a block of driving or so, however being in the SW with high temps I feel the benefits are a plus when temps are high most of the time. With lower viscosity oil and higher temps I hear the tappets more because it is just to thin after car is warmed up and being used at operating temps. It's all a trade off I suppose.

 

0w40 in the winter and 15w50 in the summer. I have always run this combo in my porsches from 944s and 928s to 996s and 997s.

 

I use MOTUL

http://www.lnengineering.com/oil.html

 

Thanks all for the input. Cannonball996, I see you have a couple Aprilla 250 listed. I used to roadrace for Yamaha on TZ250 W and A models back about 20 years ago. Lots of fun. In your 996, are you using 15w/50 wt. Mobil1? No lifter noise related concerns, or abnormally high oil pressures?

 

I have been using 15-50 eversince I got it in 2006.
It's a 2002 C4S, no issues, no gay noises.
96k plus miles.....

 

So is it safe to say that 0w-40 is better for the winter and 15w-50 is better for the summmer ?

 

I have tried both 0-40 and 15-50. I noted increased lifter noise on start-up with 15-50. I looked all over Oklahoma for mobil 5-50, none to be found here. I have now started using Castrol Syntec 5-50 and so far so good.
996 With second engine, no official records but I estimate about 60k miles on this engine. Total mileage is 126+.

 

i saw the latest porsche approved list and it looks like they did resind what is listed in the manual. At temps above 50 they recommend 0 or 5w for the cold viscosity and under 50, 0w. The warm viscosity can be either 40 or 50.