CHJ

Sorry in advance if I'm starting a thread that I'm sure is already out there, but being a newbie, I can't find. I've always been a big fan of Mobil 1, but the dealer just put Castrol oil EDGE 5/40. Is there one that has been deemed best for non-track use, especially causing less ash / carbon for the SAI valve?

Chuck

LexVan

Search key words in the 993 Forum:

Motul
Brad Penn
V-Twin

No "e" in Mobil.

Oh, and find a new dealer mechanic. Schedule oil change ASAP.

mpruden

Suggest you close this thread. It will get ugly.

Also, I recommend you use Google to search this forum like this: http://lmgtfy.com/?q=site%3Arennlist...ecommended+oil

https://rennlist.com/forums/993-foru...uate-zddp.html
https://rennlist.com/forums/993-foru...5w50-oils.html
https://rennlist.com/forums/993-foru...-easy-one.html
https://rennlist.com/forums/993-foru...-penn-oil.html
https://rennlist.com/forums/993-foru...age-993-a.html
https://rennlist.com/forums/993-foru...uate-zddp.html
https://rennlist.com/forums/993-foru...-question.html
https://rennlist.com/forums/993-foru...for-993-a.html

ilko

I like Canola. My wife's been using Coconut lately and it's driving me nuts. The viscosity and flashpoint are just WRONG!! But no way am I telling her and opening that can of worms...

simpsoap

^^ GOLD!

Emo993

LexVan +1, and Joe Gibbs Driven DT50 formulated for air/oil cooled engines. Mark

axl911

You're in DFW. Pop over to Zimm's and get yourself a case of Brad Penn. I wouldn't put Castrol (used to before I wised up) in any of my car. And 5/40 is the wrong oil for the car. Proper oil weight first, brand second!!!

Leander

...

Mike J

No, its just you :-)

Its actually just about being lazy than doing some work and searching.

PelicanParts.com

Brad Penn and Red Line are good oil options. Motul is good as well. I personally use Schaeffer's Oil. Swear by the stuff, but I track the car and love Schaeffer's for their ultimate protection.

-Luccia

Mike J

God I hate to do this - to continue yet another oil thread - but Luccia, by what scientific basis are you basing your recommendation of Schaeffer's?

I have been using Mobil V-Twin in my 993 Turbo, and my recommendation of that oil comes from a series of lab oil analysis reports that I did on every oil change, show a significant reduction in metals in the oil after coming from the PO's use of "standard" Mobil 1 to my use of V-twin, as well as a high level of Zn which I want.

I have zero evidence that Motul or other brands would not have done the same, but I am very happy with my current lab results, and being an engineer, I like provable numbers.

Cheers,

Mike

Steve Weiner-Rennsport Systems

Perfect advice, especially the part about Castrol.

Any 5w-40 (these are best in the water-cooled 4-valve engines) lacks sufficient ZDDP to protect some expensive engine parts so stick to a reputable 15w-40, 15w-50 or 20w-50.

Quadcammer

couldn't find huh?

yeah, ok.

PelicanParts.com

Thanks for the question, Mike. This is a non-Pcar to state firstly. I recently was sponsored by Penrite Oil, but they recently pulled out from the U.S. market. I was running Penrite based off of recommendations from my tuner who runs in the same series as I do for racing. They compete much more than I do and their builds are much more intense than mine so I trusted their recommendation and decided to run Penrite. After they pulled from the market I was left with few options. I wanted an oil that was compatible with 91 octane and E85, as I run both. I also wanted an oil that was specific for built motors and racing. I had known of Schaeffer's and run it before on my old motor, but stopped as it was not a race car at the time and the oil is expensive. When my sponsor shop brought up the name Schaeffer's again as a recommendation to run in my race engine, I decided to check it out. I set up a meeting with their rep and he came in to show me a presentation on their products. They did all the hard work, not I. I just sat there and watched what their oil offered as far as protection for my motor under intense pressure situations. The biggest thing that stood out to me was the levels of protection. They even showed me that my motor wasn't receiving the protection I thought it was with Penrite oil as we tested it in comparison. I'm sure many of you have seen these types of presentations where they lube up a bearing and show you how it reacts under pressure. When the zinc level is broken from the pressure their oil provides an extra level of molly protection. I believe Motul is similar to this, but haven't seen it tested myself. From the presentation I also spoke with the rep for over an hour about stories of their oil prolonging motors that were not doing well and so on and so forth. I was convinced and was able to work out a sponsorship with them. Again, oil is all personal preference, but I stand behind Schaeffer's and look forward to seeing how my engine does with it lubricating its internals. I am no engineer and do not have scientific numbers for you, but I am sure those are easily accessible by reaching out to the company yourself or running a test on it as well. Cheers!

-Luccia

CHJ

That was my feeling also on the Castrol. I looked in the owner's manual and 5/40 wasn't recommended and I thought maybe there was some directive from Porsche due to the SAI or some other issue. I've called the dealer and told them if they can't come up with documentation, I want it changed to the proper oil. We'll see what happens.

I'll be using Mayo Performance after this, but it needed to go to the dealer this time for shipping issues.

Thanks to everyone for their best thoughts.

Chuck