I was at Jiffy Lube in Harrisburg with my beater truck. And, they had 5w-50!

I ordered 3 cases.


FYI.


My car is using about 1/4 a qt per 600 miles on turbo diesel 5w-40 right now.....for me, I like it better than 0w-40 for this reason alone. Go figure. 0w-40 was about 1/2 qt per 500mi.


JB

 

Mobil 1 5W-50 rare there?

Interesting, that's what I have always used with the track-driven 996TT.

 

20 w 50 pleases tell me about that weight

 

996TT manual:

0w-40
5w-40
5w-50

Winter/cold:
5w-40
0w-40

That is it. Heavier is not supported.

JB

 

20 w 50 slow turbo responce ??

 

No...the valve and top end stuff....the newer engines need the 5w or 0w rating. This has been covered here, pca.org, rennlist, and in Excellence. There are people running old oil weights (like 20w-50). It is not supported by Porsche. Period.


I for one don't feel it is a good idea to run 20w in a 996TT. The main issue: the cost to repair the top end..... See the manual for weights. I just noted the Mobil 1 weights. Most others are 5w-40. In LA, I suspect you could run 5w-50 all year.

JB

 

For the people running heavier weight oil and running ball bearing turbos~

Are you having to having to run a inline oil filter or anything to reduce oil pressure going to the turbos?

 

So anyone know where I can buy 5w-50 mobil 1 online?

 

Dumb question I know. but I have never understood oil weights

996TT manual:

0w-40
5w-40
5w-50

Winter/cold:
5w-40
0w-40

Which is heavier and which is lighter?

Tim

 

basically the higher the number the THICKER the oil, so it flows less. THe less viscous oils have lower numbers, which means less work for the engine. Higher heat tends to decrease viscosity so in hot weather you will see higher numbers than in cold weather. The 5-40 is a good all arounder, in real hot weather I would guess a 5-50 is recommended.

 

Is it the 5W-50 Turbo Diesel Heavy Duty stuff? What does the label say?

Thanks.

 

jcp, does the mobile 1 5w-50 have the zinc additive like that turbo deisel one does ?

 

Kevin from UMW is one of the guys with the most knowledge on this subject. Here's a link to a thread which will tell you everything you want to know about 5-50 vs 0-40, Zinc, etc.

http://www.turboflatsix.com/oil-reco...-t71.html?t=71

 

+ 1 for kevin , hes a good guy.

 

Tom,

On zinc, yes...here is the M1 link for the oils. I think of the zddp

http://www.mobiloil.com/USA-English/...otor_Oils.aspx


with a table of the oils here...

http://www.mobiloil.com/USA-English/...duct_Guide.pdf

Jeff