cgfen

https://www.autogeek.net/penngrade-1oil.html

enjoy!

Andy Hodapp

Sadly not the correct oil for a 993, should be running 20w-50 or 15w-40 for colder climates. Great deal if you have a car that does take 5w-40.

JasonAndreas

Since when?

myflat6

This has all the looks of becoming another lengthy oil thread. Buckle in for the ride!

JasonAndreas

Hell NO! We should just say thank you to cgfen for pointing out that this stuff is available for $5USD.

Andy Hodapp

Sorry, didn't mean to start an argument. Thought 5W-40 was more for water-coolers but I could certainly be wrong.

fsa

Page # 90 in the 993 Owner's Manual tabulates correct, recommended engine oil viscosity by usual ambient temperatures in which operated.
15-40 for most everything,
5-10 lower parameters if operated at <14-degrees F.

goofballdeluxe

PennGrade is Brad Penn?

Steve Weiner-Rennsport Systems

You are correct: the 5w-40 oils are best suited for the water-cooled cars unless operated in near arctic conditions.

fsa

Penn Grade = Brad Penn = new nomenclature post-acquisitions and mergers

71-3.0-911

I've got 5 new bottles of Penngrade/Brad Penn 20W-50 someone local can have. I switched over to Motul. Denver area.

cgfen

You're right.
I should have included a use case disclaimer..........................

I bought a case for our 69 Barracuda.
No worries about a catalytic converter with this application.

JasonAndreas

Every few years the same people on this forum keep changing their reasons for scaring owners into not using product ABC. The worst post I've witnessed was telling somebody to immediately drain their oil after it had just been changed. (I would still love to see those bearing clearances posted...) Truth is, there is not a single person (that regularly posts on this forum) that can tell you what is too thin. However we do have almost 30 years of usage data now! So we might be able to look at what the factory has been using to fill the 3.6L during production and later at regular service intervals when you bring your 993 to Zentrum Stuttgart; Shell TMO 10w30 -=> Shell TMO 5w40 -=> Mobil 1 5w40 -=> Mobil 1 0w40 -=> 10w60???, and their cST@100C & HTHS@150C values to see what might be considered a bare minimum?

Andy Hodapp

I'm pretty indifferent to what oil people use as it has no real effect on me. Only thing I can really say is I would follow what ever Steve Weiner says. Among people on this forum, he probably has the most experience with these engines.