Bill Verburg

Please show us where this is documented

AFAIK Porsche oil is repackaged Castrol Edge 10w-60
It fails on 2 counts
1) for 993 summer use 15w-40 or 15w-50 are the recommended summer weights(look in you owners manual)
2) ZDDP specs back in the mid '90's was ~1100ppm P & 1400ppm Zn, I know of no Castrol product that even comes close to those levels

Bill Verburg

It's partially due to Cafe requirements but more to the EPA mandating long life emissions systems, ZDDP kills catalytic converters, so API came out w/ the new ILSAC standards that killed 2 birds w/ one stone, Most modern engines run fine w/ these low weight low ZDDP starburst label oils, 993 do not, or I should say that will run but will also wear out much faster.

Kein_Ersatz

Bill V - FTW!

Just love oil threads, next up engine trays...

EMBPilot

schooled by Bill.

bwp951

Oil thread #xxx,xxx,xxx

user 723923490

Somebody please find the most comprehensive oil thread and make it a sticky!

BlackSnake99

I have never been on a car or bike forum where there haven't been oil fights! It MUST be the most consistent thing on the Interweb.

AX993

When I had a climate control unit fan speed surge issue I found this post by rennlister RecardoD on the 964 section. I believe that there have been other diy's on Rennlist and Tore's ( https://www.bergvillfx.com ) website you might also want to read.

https://rennlist.com/forums/964-foru...aning-diy.html

I used his instructions to clean the thermistor and used electronic contact cleaner on connections and fan and temp rheostats. I didn't need to replace the thermistor fan so I skipped that part.

Fan speeds have been working correctly for 6 months now!

IainM

I recommend an Italian tune up to all my friends

VintageRacer477

[QUOTE=Your A/C problem sounds like a bad temp sensor in the CCU, climate control unit. The dealer will be able to pull codes with there hammer tool and know exactly what is wrong. Could also be a bad resistor on the rear engine fan.[/QUOTE]

I took it to the dealer because one would assume they would be able to read the codes. They found no codes. And, the a/c has been working flawlessly since the day that it went haywire. It figures.

As for the milky oil—thanks to all who commented. I didn't check the filler cap before Thursday's oil & filter change. But, did just now and underside of cap is perfectly clean.

Will have a couple of long drives in next month including the 600-mile R/T to Werks Reunion. I know that it needs more of that, and less of the local short-trips.

Mike Murphy

^^ This. And what temps is your engine running at? It's possible that the temps aren't getting hot enough to vaporize the water, and its possible the crankcase isn't breathing enough. Like humans, engine breathe out a surprising amount of water when they operate. Water then gets into the oil through the piston rings and doesn't have an easy way to get out. The moisture can build up over time.

Oil change, analysis, and monitoring of water over time, longer running times, and an operating temperature check.

pp000830

Selling oil:

pp000830

Gbos1

Is this all Horse Sh*it?

https://www.pca.org/news/2015-03-12/...d-tech-tactics

http://www.porsche.com/usa/accessori.../motoroil-faq/

OverBoosted28

Not sure on how much better (if any) that oil MAY be. Ya have known, proven results (for the most part), with the current handful. I'd stick with them, until the other is proven to be superior. Your engine doesn't need to be the guinea pig for Porsches marketing campaign.