Mobil 1 Rebate - 986 Forum - The Community for Porsche Boxster & Cayman Owners

70Sixter · 02-27-2009, 10:48 AM

Wow. Had no idea I would stir up all the discussion with a simple rebate link!

Anyway, I enjoyed the opinions expressed. Jmatta mentioned Charles Navarro and I just happened to be reading his oil treatise.

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

I was reading the FAQs under "What viscosity should I use in my Porsche?" My brain is tired.

941MXVET · 02-27-2009, 12:53 PM

This must be one of the hardest topics to discuss, but the info provided on LN's website is very informative. I've ordered 10 Quarts of Swepco 5w-30 due to it's ZDDP and Moly levels for my next oil change. However seeing the link to the PDF file "Oils ain't Oil" I'm really thinking of switching to Royal Purple instead. Thanks to the LN, Flat Six guys for sharing their expertice on a very complicated topic for us layman!

I'll probably still use the Swepco as for now though.

jmatta · 02-27-2009, 02:16 PM

Hey 70Sixter...your post is very timely and it seems like all oil discussions go all over the place these days. This board is very informative and I think it's good to point out the good and bad and let indiviuals make their own decision.

As for opinions, you know what they say: "Like ************************************s, everybody has one"

machone · 03-04-2009, 10:17 AM

OK, so to add on to this thread a little late -

I've read through LN's and Jake Raby's site, and all of the posts I can find.

I see that Royal Purple 5W-30 appears to be a good choice, as well as Swepco. I see on LN's website that is Brad Penn is their recommended oil for aircooled P-cars, does the same apply for the water-cooled descendants?

I happen to have a local distributor for Brad Penn, although its a little more out of the way than the Royal Purple. Is anyone running the Brad Penn in their 986?

I'm an engineer by education, so when I saw I could do oil analysis and really get an idea of the oil composition, I was sold. Is there anyone currently doing it that could add any comments on composition trends to look for? i.e., my X content started to climb, and then I had to buy a new motor?

Thanks,
-Michael
'99 w/ 40K hoping to keep its original motor

S3adrag0n · 03-23-2009, 09:19 AM

Bummer!! I just changed mine with M1 (10-30). The guy that I bought my Boxster from said that he had changed about 7k ago. Man, it was a good thing I did it (first time for me; I was a virgin!). It looked like he didn't even change the oil while he had the car (about 3 years with 10K; carfax report). The filter looked realy bad and the oil was a bit thick and syrup.

I'll just changed it early next time. By then, we'll have have our oil brand sorted out!

Brucelee · 03-23-2009, 09:42 AM

Quote:

Originally Posted by S3adrag0n

Bummer!! I just changed mine with M1 (10-30). The guy that I bought my Boxster from said that he had changed about 7k ago. Man, it was a good thing I did it (first time for me; I was a virgin!). It looked like he didn't even change the oil while he had the car (about 3 years with 10K; carfax report). The filter looked realy bad and the oil was a bit thick and syrup.

I'll just changed it early next time. By then, we'll have have our oil brand sorted out!

Porsche specs a 40 wght oil for this engine, not 10W-30. If it were me, I would change it now.

VFX · 03-23-2009, 10:34 AM

OK I may be a little naive here & I don't pretend to know anything about engines & lubricants, but I just had a service from MCL Porsche Vancouver & they used M1.
In fact my car has had M1 from the official Porsche dealer from factory until now.

Why would Porsche still keep using M1 if it is bad for my engine?