How to do a DIY 991 GT3 Oil Change
07-03-2017, 08:40 AM
#151
Good day again,
Any issue with using the aluminum plug for the oil tank drain (as standard on nearly every other oil sump drain) vs. the copper one of the same size when sealing the plug?
I didn't have the copper one shipped at first, and installed the usual aluminum crush washer that comes with most drain kits for the engine oil sumps. Any major difference, and what is the rationale for the difference at least in this particular drain plug, while the other plug for the smaller drain screw has an aluminum smaller diameter washer?
Any issue with using the aluminum plug for the oil tank drain (as standard on nearly every other oil sump drain) vs. the copper one of the same size when sealing the plug?
I didn't have the copper one shipped at first, and installed the usual aluminum crush washer that comes with most drain kits for the engine oil sumps. Any major difference, and what is the rationale for the difference at least in this particular drain plug, while the other plug for the smaller drain screw has an aluminum smaller diameter washer?
07-05-2017, 08:20 PM
#152
Race Director
Thread Starter
Quick update on the parts detailed above...I also, like Mike, bought the oil filter kit ultra early on which came with the oil sump washers only (ending in -30), and the green rubber o-rings. Just realized as I was going to do the change on my own now. Bought parts 2 years ago. Did not get shipped the oil tank washer (brass apparently andending in -20), and all drain plugs sent are the same size as the usual oil sump plug on most models.
To be sure, the oil tank washer and oil sump washer are not interchangeable? And is the drain plug also not interchangeable? I can't find a current proper PET set of documents to compare, and would prefer real experience.
BTW, thanks for the great DIY, even though I've read it for years now.
To be sure, the oil tank washer and oil sump washer are not interchangeable? And is the drain plug also not interchangeable? I can't find a current proper PET set of documents to compare, and would prefer real experience.
BTW, thanks for the great DIY, even though I've read it for years now.
Good day again,
Any issue with using the aluminum plug for the oil tank drain (as standard on nearly every other oil sump drain) vs. the copper one of the same size when sealing the plug?
I didn't have the copper one shipped at first, and installed the usual aluminum crush washer that comes with most drain kits for the engine oil sumps. Any major difference, and what is the rationale for the difference at least in this particular drain plug, while the other plug for the smaller drain screw has an aluminum smaller diameter washer?
Any issue with using the aluminum plug for the oil tank drain (as standard on nearly every other oil sump drain) vs. the copper one of the same size when sealing the plug?
I didn't have the copper one shipped at first, and installed the usual aluminum crush washer that comes with most drain kits for the engine oil sumps. Any major difference, and what is the rationale for the difference at least in this particular drain plug, while the other plug for the smaller drain screw has an aluminum smaller diameter washer?
My apologies for not picking up on your questions sooner.
On my 2014, at least, the two drain plugs for the sump and the one for the oil tank are not interchangeable; the one for the oil tank is larger in diameter. For that reason, the washers aren't interchangeable either. When I ordered the original oil change parts kit the washer for the oil tank plug wasn't included. After contacting Suncoast about this issue, they sent me the oil tank washer separately. The washer for the tank plug is copper and the ones for the sump plugs are aluminum. I don't know the rationale for the difference in materials but knowing Porsche, they must have one.
BTW, to the best of my knowledge the green rubber O-ring serves no purpose. It was shown on the PET for the 2014 as being associated with the threaded post where the oil filter mounts but as my original factory filter didn't use an O-ring and I've never seen a screw on filter that employs an O-ring in that location, I didn't use it either and have experienced no problems with leaks.
The following users liked this post:
Lebreeze (12-05-2019)
01-04-2018, 09:59 AM
#157
Nordschleife Master
Originally Posted by silverrules
Mike, its great to see your post again.
Originally Posted by Mike in CA
Thanks, Kamal. Hope you've been well!
01-04-2018, 04:15 PM
#160
Race Director
Thread Starter
01-04-2018, 04:16 PM
#161
Addict
Rennlist Member
Rennlist Member
Nice job, Joe! Can you post a pic of the manual showing 17 ft-lbs for the oil tank plug (if you have it), please? I have some confusion about that and was told 22 ft-lbs (30 Nm) by dealer technician with workshop manual. Also, was newly installed washer also copper like the one originally on the car?
Thanks!
Thanks!
Last edited by GrantG; 01-04-2018 at 04:40 PM.
01-04-2018, 05:48 PM
#164
Race Director
Thread Starter
01-05-2018, 01:00 AM
#165
Drifting
