Oil for a Boxster S

[nicecar]

heat shield or most likely baffles in muffler fought rattle for years, tightened heat shields still rattle... replaced muffler with old muffler, still rattle (100 dollars) Bought Cal. used muffler (300 dollars) No rattle finally. I would bet my paycheck on bad muffler.

[nicecar]

oh btw, stay at home dad, no paycheck!

[amagalla]

Originally Posted by rfuerst911sc

I've had several visits to Jake Raby's shop since I got my 02 S. To start with Jake has probably seen/documented every engine failure that has every occurred in these engines. He has real data based on engine dyno runs, real world long distance runs plus hundreds if not thousands of customer feedback miles. Add to that he has done thousands of oil analysis tests and he recommends Joe Gibbs Racing oil. That's good enough for me. No I am not a blind sheep but real world testing vs. internet gibberish I'll take real world testing every time. Yes it's a little bit of a pain to order it over the net vs. going to Wally world or local FLAPS but I want my engine to live. I could give a rats ass that it's not an approved Porsche oil or doesn't have a shiny Mobil sticker on it but I'm looking for consistent protection. Rant over have fun out there.

I agree that the Gibbs DT40 is the BEST oil for these cars. But that wasn't my question. I'm not a Mobile 1 "Kool-aid" drinker (just like I'm sure you're not a "Raby" Kool-aid drinker). I'll use any synth oil that works. My question is; Given the higher levels of P and Zn in this particular oil, and it's general availability and significantly lower cost, is it a workable alternative?

Tony

[nicecar]

Originally Posted by edryer986@gmail.com

My mechanic put Mobil 0 40 in my Boxster. Previously he had used Mobile 10 W 30.
When car is at operating temperature, I hear a new rattling noise from my exhaust. When clutch is depressed, noise goes away. Is the cause of the noise the weight of the oil or do I have other problems?
Thanks

the answer to the op is the oil has nothing to do with the rattle. period

[jsceash]

Tony, I gave you the simple answer. There is so many detergent in diesel oils that you would have to double the level of wear additive to make them as effective as the oils that are recommended. Detergents are indescrininent about what films they remove including that thin layer of ZN and ZDDP that is protecting the aluminum bearing surfaces for your cam shafts, lifter carriers, and cylinders.

https://www.youtube.com/watch?v=lQ6NXXLZA3A&feature=youtu.be

[amagalla]

Ok. usefull info. Thanks.

Sent from my Transformer Prime TF201 using Tapatalk

[JayG]

First off, I am not an oil expert

IIRC from something I read, the purpose of low viscosity Multi weight oil is that it is thin enough to flow easially when the engine is bone cold. As the engine warms up it acts like thicker oil hence 0-40w. The colder the climate, the thinner the oil that is needed

If I am wrong, don't flame me