0W 40 or 20W 50 for a 1986 Porsche 944 Turbo

[OVERKILL]

Originally Posted By: SHARKYTOOTH
Originally Posted By: Nickdfresh
Originally Posted By: Audi Junkie
...but Doug Hillary said otherwise.

He lives and breathes the Porsche Approvals list.

Doug Hillary has a heck of a lot of credibility, contacts, and credentials. But yeah, oh, okay. Some guy says that Mobil1 caused "premature bearing wear" at his shop. So sayth he, amen. Blessed are the users of a good, sturdy 20W-50! Castrol's the best because it didn't grenade the engines of 1969 Triumpths--as much...

So much so that he wants us to use Delvac in our cars, lol.
The 'Some guys' you refer to are people that actually work on guess what, Porsches. Not like Mr Hillary who works on stringing lots of words together and mesmerizing people around the world who have no way of checking his credentials.


It was pretty easy for me to check Doug's credentials. I have a copy of one of his books. Where are yours?

So quick to condemn somebody... yet with such few posts. It would almost seem you have an....... agenda.

 

[XS650]

Originally Posted By: SHARKYTOOTH
Meh, you guys need to do some research on who you idolize.


Snarkytooth, if you actually know something, share your wisdom.

 

[Audi Junkie]

People who race on 0w-40 change it everytime afterwards, because it shears to [censored} and because somebody else is footing the bill.

 

[Gary Allan]

From Doug's signature

06 Mercedes Benz CLK (M1 0W-40 SM/CF)
01 Porsche Boxster (Delvac 1 5W-40 CI-4/SL)
08 Suzuki Burgman AN650K8 (Castrol R4Superbike 5W-40 SG/MA)

 

[Craig in Canada]

Originally Posted By: Nickdfresh


Um, there's a guy here that ran M1 15W-50 year round in his Chevy Cavalier 2.2 OHV and put well over 100K on it. I doubt M1 15W-50, with a pour point lower than many conventional 5W-30s, is going to be "'rediculously' thick on start-up". Nor did I ever advocate running 15W-50 year round...


Today's M1 15W50 is not the same as circa 2001. That alone has been the topic of several threads here. If I was topping up oil in the 40s it had honey-like qualities from my recollection. Granted our friend wouldn't be buying 2001 M1 15W50 either.

Quote:

Um, what's the difference between the 15W in a mineral 15W-40 to a synthetic 15W-50 at cold start-up? If you're worried about start-up, then who cares if it's equivalent to an SAE 40 or 50 weight at temp?


In pure summer, the 15W50 wasn't a problem, and 15W40 wouldn't be either. The problems I referred to were spring/fall "shoulder seasons". I never drove my 968 in winter, but that didn't mean it wasn't around freezing when I was still using it.

Quote:

Secondly, air-cooled, water-cooled, turbo, naturally aspirated--we're still talking about cars manufactured in the early 1980s in an era that generally recommended thicker oil to compensate for poorer base oil qualities and deficiencies in engine design...


I don't know that a 951 has a whole lot of "deficiencies in engine design" that Porsche fixes with a recommendation for thick oil. It's not as sophisticated as newer designs but it isn't exactly a loose-tolerance, low-precision engine barely holding itself together. The better qualities of today's oils means we don't have to run 25W60 to get something that will hold up under some pressure.

Did the OP say he was looking for oil for a Porsche 944 Turbo race car?

 

[azsynthetic]

Originally Posted By: Audi Junkie
So, now there's no deserts in Arizona?

He already uses 15w-40 in winter, and finds it suitable.

I told you to take a geography lesson before you post didn't I??? Arizona has every thing: desert, mountains, national forest, Grand Cayon, etc. The more you know!!!!!!
Originally Posted By: Audi Junkie
So, you have no you have no personal experience?

You should have just said so.

I didn't want to bother you with facts since you chose to ignore them to suit your purpose. I don't drive a Porsche because my Corvette ZR-1 is a lot faster and lot less expensive to maintain. My friend do race Porsches against me at PIR on occasion.

 

[azsynthetic]

Originally Posted By: Audi Junkie
People who race on 0w-40 change it everytime afterwards, because it shears to [censored} and because somebody else is footing the bill.


So now you admit that people do race with 0w-40. Sheeshhhhh!!!!

 

[aquariuscsm]

Maybe this analogy can corelate here.........weekend hobbyist racers use 20W50 (or thicker) so they can have engines that will last without having to be rebuilt after every race when raced on a regular basis. Thicker oil for added protection since they`re keeping the same engines. Nascar (from what I was told) uses 0W20 to qualify and 0W30 for the actual race so they can get the fastest speeds,while not worrying about engine longetivity since they get rebuild on a regular basis. Jmo though,as I may be totally way off :^P

 

[Audi Junkie]

Originally Posted By: azsynthetic
Originally Posted By: Audi Junkie
So, now there's no deserts in Arizona?

He already uses 15w-40 in winter, and finds it suitable.

I told you to take a geography lesson before you post didn't I??? Arizona has every thing: desert, mountains, national forest, Grand Cayon, etc. The more you know!!!!!!

What I originally said was:
Originally Posted By: Audi Junkie
What is the use of a 0w synthetic in the Arizona desert anyway? To maximise cost and consumption?

Did I say Arizona was only deserts? No, but your limited brain power failed to comprehend that, but instead when off into another one of your garbage posts.

Too bad you chose not to answer the lubrication question at hand, but rather wanted to flaunt you junior high school knowledge of geography.

We are impressed, maybe now you could do a map for us with some construction paper and crayons.

 

[azsynthetic]

Hahahaha, please stay on topic and keep the kid request in PM.