bgiere

Nick, i am currently running a 5w40 Schaeffers...I am not certain it's available in your area however. I statrted running 40wts after i was getting high temps at the track...north of 240ish...i had done a cooling mod,scoops,etc. turns out my engine just doesn't like 50wt oil. i would say the brand you choose is not as important as long as it meets specs....Porsche has a "recommended list". Redline 5w40 is a proven oil as well as Delvac (Mobil) 1 and Rotella 5w40. these will all have the proper specs. look for the HTHS # to be no lower than 3.6, most 40wts will be around 4.2ish....good luck to you and i will quit boring everyone with oil talk!!

bgiere

Nick, here is a list to choose from...shud have mentioned...racing is all my 964 cup is used for...in 2005 i did 12 events with outside temps of around 90 F in Ohio and Pennslyvania...my oil temps were no higher than 230ish even after the longer races...

http://www.wrightune.co.uk/downloads/approved_oils.pdf

MSchett2

The drain plugs shouldn't be that tight. They should be easy to get off with a regular wrench. Porsche changed the torque specification for the crankcase and thermostat housing drain plugs to 50 Nm (37 ft.lbs) in TSB 9409. Anything more than that and you risk stripping.

Indycam

When I first got my car the plug was way tight . When I put it back on I did not torque it as high and it leaked . I guess that the plug was torqued way high to get rid of the leak .

I used my normal drain pan the first time not thinking about how much oil was going to come out , made a great big oil slick under the car .

dfinnegan

And now . . . do you over torque, or accept the leak?

Indycam

Bought a new seal and torque it a bit more that I thought I should . Still drips a little . Next time I'm going to find the problem and fix it , hopefully .

Heirsh

You could make yourself a sealing ring with an o-ring on the engine side. This should make up for any damage to that sealing surface. The bolt and the sealing ring would be new, so no problem there.

Just an idea.

Indycam

Hiya Heirsh
The seal that leaks on my car is under the shark fin , and I think an oring would work great if the sealing surface is not dinged . I'm guessing the plug is fine , I've looked at it , I guess that the other is dinged or scratched .

bgiere

i'm probably committing a P car sin but i put a little teflon tape on the first couple threads of both the tank and crankcase drain plugs...not too much or it can get in too far...a little is all you need to stop the drips!

Eggplant Cab

I don't think stopping a leak is very un P car like. esp since it is prone to leaking there.

I'm intrigued that you send the oil for analysis. How often do you do that? Are you also measuring compression and other engine performance related issues?

bgiere

i will do a UOA (used oil analysis) 2-3 times per season. it will give you idea of wear rates on bearings,cams,etc. and it will show if your oil is going it's job. i do a leak down at the beginning of each season...so far, perfecto! go to google and search for Blackstone Labs...they will send you an analysis kit for free! drain a couple ounces into it and mail it back...5 days from now you will see inside your engine in a way you never thought possible...it really takes alot of confusion out of decsions you need to make regarding te engine.

Smokin

Brant,

Thanks for your post. I just ordered my free kit. For $20 to get your oil analyzed... It could be the best $20 you ever spent!

(No affiliation)

Heirsh

It will take a good long while to get the kit. Be patient. I'll be sending in my first sample this saturday. Looking forward to the report.

bgiere

i would agree..it is a smart $20 to spend...it also helps to take the anxiety out of oil selection! as we all know, the "which oil is best" topic can be filled with alot of mis-information,hype, and uncertainty...this will tell you if it is doing the job. just my 2 cents...it works for me!

bgiere

http://theoildrop.server101.com/cgi/...c;f=3;t=002858

here is an example of a Blackstone report from a 911 running 0w40 as an FYI...i hope everyone's looks as good as this one!!