Hey everyone,

I have searched and read the threads on here about which types of oil, and some of them look pretty old. Just wanted to make sure the recommended oil is still Mobil1 0W-40? I wouldn't think opinions have changed, but thought it couldn't hurt to make a post.

I have a 1999 Porsche 911 C2 Coupe. 70k miles.

Thanks for your expertise!

Swaff

 

Wow...you'll get so many opinions on this one. And some ridicule for bringing up another oil thread. But, good question.

My opinion is go with Joe Gibbs DT40 on Amazon.com. Another option that has worked VERY well for folks is Amsoil European 5w-40. Many, me included, don't love Mobil 0-40. It sheers down and starts to burn for many folks. The two oils above don't sheer or burn. They are both high quality full synthetic oils.

If you want some in depth reading, try BITOG.com You'll run across many good articles on how oils do. I have UOA's (analysis) on Amsoil and it is strong.

Another suggestion, buy the LN Engineering spin on filter adaptor and do that at the same time. Easier, better filtration, not plastic. You can get this at LN's site or Pelican Parts. I'd recommend a couple other things: Change your air filter too, clean the air box, clean your MAF, and also your throttle body. You'll be amazed at the gains you'll get from these simple tasks. See my spring DIY day thread. You can get all the DIY info by searching this site.

Good luck and thanks!

 

I use DT40, developed by Flat6 Innovations, LN Engineering, and Joe Gibbs Racing for the Porsche.
Total, M1, Castrol, Liqui Molly, Motul, and Royal Purple are all good oils. You need 0w-40 or 5w-40 European Full Synthetic.

PM me an e-mail address and I'll send you a list of Porsche Approved oils.



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

https://www.lnengineering.com/joegibbsracingoils.html

 

Park is correct about the filter adapter, love mine. You use a NAPA 1040 Gold (< see Park, Gold ) or the K&N HP-1007.
Also, you can order DT40 directly fron Joe Gibbs Racing, I think it's $132 a case.

 

Thanks for the great insights! I will look into those other things as well. I called one place to ask about an oil change and they said they recommended 10W-30 since my engine is much older, but that didn't seem to be a right suggestion? They said the 0W-40 or even 5W-40 is very thin and they wouldn't recommend that. With that said, it was an indy place and not a Porsche-specific shop.

I have an upgraded K&N air filter, so I can take that out and clean it and just reuse the same one instead of having to buy a new one. Will do that as well.

Swaff

 

When you clean your filter, only oil the intake side.
If you're concerned about the weight call Flat6, 0w-40 or 5w-40 are the weights Porsche specifies and none of the oils on the approved list are 10w-30, personally I wouldn't go there.

 

We've created a great step-by-step DIY article which will guide you through the process of an oil change for your 996:

Changing The Engine Oil In Your 996

Now which specific oil? - many of the brands mentioned already are fine!

 

There is a good one also on the forum, do a search for "Red Dragon" not to ground the Pelican...

 

With the K&N you'll really benefit from a cleaning, cleaning of your MAF sensor and throttle body then. Be SURE to barely use any oil on your filter....go easy so you don't create any future MAF fouling issues. Best of luck.

Oh, by the way, I wouldn't go with a 10w30 in your car at all. You need the 40 at the high temps these run. I'd stay away from 0's though. I think you'll be fine if you're not leaking or burning oil with the recommended 5w-40.

 

That "place" is clearly a place you do *not* want to take your car.

I run Mobil 1 0w-40 in both my 02 Boxster and my 03 Turbo. The Boxster has 266K miles on its engine and the Turbo has over 106K miles. Mobil 1 0w-40 oil is just fine and it does not pour out of the engine past any seals or through gaskets nor does it sneak past the rings, or valve stem/guides and seals, etc.

If you want a "heavier" oil run an approved (look for A40 on the bottle) 5w-40 oil or even a 5w-50 oil (not a typo for 15w-50!). Mobil 1 5w-50 is an approved oil.

10w-30? Save that for your lawnmower engine. But I would not take the lawnmower to that "place" for any service.

 

Another convert here to DT-40 and spin on. Engine seems happy with it.

 

http://www.design911.co.uk/fu/prod14...VE-Technology/

I use it...

 

I've heard good things about Millers! Not sure if we can get it here though.

DT40

 

Millers in USA http://www.performanceracingoils.com/

 

Here in germany most of the Porsche Drivers use the Castrol Race Edge 10W 60 in their Porsches.
The 0w 40 is to thin i think...and the perfomance of the 10W 60 is much better...
Iam running in my 996 the 10W 60 since 4 years....

Greets from Hamburg

Z