FINALLY took delivery of the '82 924 Turbo (931) that I had been trying to acquire for 6 months, have no idea what oil was in it, but it had an "original" Mahle filter (good sign). Had some trouble getting it started, lot of cranking and rough running initially while the electrical gremlins were sorted out, but fresh oil while operating under its own power
60K miles on engine, ZERO varnish or sludge up top, rebuilt K28 turbo, 951 oil cooler with Canton sandwich and big -12 stainless steel lines.
I put in 6 quarts of Royal Purple 15w-40 (forgot to take oil sample of what was in there). I will run it for only 3K miles and then have it tested.
So the question remains-- what NEXT? I would like to try the following oils, in no particular order, and compare UOA and fuel mileage, as my life is rather predictable
1) M1 EP 15w-50
2) RedLine 15w-40
3) LubroMoly Voll-Synthese or MoS2 5w-40 (eewww, but want comparison...no snickering!)
4) Mobil Delvac 1/T&S 5w-40
I am already using the K&N Gold filter, I probably should have used the cheaper Mahle filter (OEM) by comparison, but oh well.
Thoughts? This car will be daily driven in a variety of 50-90 degree situations (freeway/city/traffic) as well as autocrossed with SCCA and PCA, and maybe try to do one HPDE/trackday with each OCI to see how each oil holds up. All other filters/plugs are factory Porsche products, and I will try to use the same gas station as well to limit too many variables.
Thoughts?
-James Wilson
www.DaveTurnerMotorsport.com
60K miles on engine, ZERO varnish or sludge up top, rebuilt K28 turbo, 951 oil cooler with Canton sandwich and big -12 stainless steel lines.
I put in 6 quarts of Royal Purple 15w-40 (forgot to take oil sample of what was in there). I will run it for only 3K miles and then have it tested.
So the question remains-- what NEXT? I would like to try the following oils, in no particular order, and compare UOA and fuel mileage, as my life is rather predictable
1) M1 EP 15w-50
2) RedLine 15w-40
3) LubroMoly Voll-Synthese or MoS2 5w-40 (eewww, but want comparison...no snickering!)
4) Mobil Delvac 1/T&S 5w-40
I am already using the K&N Gold filter, I probably should have used the cheaper Mahle filter (OEM) by comparison, but oh well.
Thoughts? This car will be daily driven in a variety of 50-90 degree situations (freeway/city/traffic) as well as autocrossed with SCCA and PCA, and maybe try to do one HPDE/trackday with each OCI to see how each oil holds up. All other filters/plugs are factory Porsche products, and I will try to use the same gas station as well to limit too many variables.
Thoughts?
-James Wilson
www.DaveTurnerMotorsport.com