Porsche Classic Motor Oil "explained" by Porsche guys
03-18-2015, 05:00 PM
#16
RL Technical Advisor
Brad-Penn Racing 15w-40 or the 20w-50
Correct on the Mobil 1 V-Twin stuff.
03-18-2015, 08:22 PM
#17
Motul 300V 15w-50 (not cheap, but THE best)
For a while I was getting gallon jugs for free, as the Motul rep @ Willow Springs for the HSR group, liked my girlfriend's friend. Ahhh, the good ol days!
03-18-2015, 08:52 PM
#18
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Back in the day .... with the 993 motor production in Zuffenhausen, every newly minted 3.6 would line up for the limelight in the adjacent dyno room. A stone cold 3.6 with production gestation behind it would ascend directly to 3,000 RPM. IIRC the spec was 3K RPM for 10 minutes or so.
Question: What oil type would have been used in the dyno room's (warm) oil plumbing system? There was a large reservoir of warm oil. Bob's Oil 10w-60 ?
The M1 V-twin 20w-50 has served well over the years ...
Question: What oil type would have been used in the dyno room's (warm) oil plumbing system? There was a large reservoir of warm oil. Bob's Oil 10w-60 ?
The M1 V-twin 20w-50 has served well over the years ...
03-18-2015, 09:54 PM
#19
Drifting
^ good old conventional 20W50 delivered by whoever had the global RFP for OEM factory fill at that time. The same tanker load that arrived via rail was used for both the test room and factory production line.
03-18-2015, 09:58 PM
#20
RL Technical Advisor
03-19-2015, 12:03 AM
#21
Nordschleife Master
I am currently running Mobil 1 15w-50 in my car.
I would switch to Mobil 1 V-twin, but I'm a bit concerned about the higher ZDDP levels toasting the cats ... Any comments pro or con? Thanks!
03-19-2015, 03:54 AM
#22
RL Technical Advisor
I am also concerned about the cats, however here are two data points for you:
1) In all these years and a LOT of cars, I've never replaced a cat due to poisoning, just heat-related damage due to excessively rich or lean fuel mixtures and even that is VERY rare.
2) Cats are cheaper than cams, rocker arms, rocker shafts, and all the labor to do this job.
Naturally, this is simply my opinion and others may not share it.
03-19-2015, 06:09 AM
#23
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Said ,, with tongue and cheek
During the 993 production PAG was uber proud of their Mobil 1 choice, er marketing agreement. So proud in fact as a 3"x3" Mobil 1 sticker was placed on each 3.6 engine. Recall back to the '80's ,,, early '90's, synthetic oil hadn't achieved the market presence as synthetic oil does today.
However, nothing special about the oil used in the Zuffenhausen dyno room; I suppose not.
The first oil/filter change for the 993 came after 4 days ownership. Received the long awaited call as a PCNA delivery truck was unloading. 11 miles were showing when starting the 1,500 road trip heading west. Three days was Georgia to Colorado. The spread sheet indicates 12qts of Mobil 1 10w-40 sourced from parts dept at Pioneer Porsche/Audi Denver Oct 1997. Those were the days. The Pioneer dealership went defunct decades ago .... and Mobil 1 as a brand has 19 different formulary's on the auto jobber shelf's today...
Early years Mobil 1, 15w-50 and of late V-twin 20w-50 have served the coupe well. Screw this silly PAG 10w-60 Classic oil nonsense.
However, nothing special about the oil used in the Zuffenhausen dyno room; I suppose not.
The first oil/filter change for the 993 came after 4 days ownership. Received the long awaited call as a PCNA delivery truck was unloading. 11 miles were showing when starting the 1,500 road trip heading west. Three days was Georgia to Colorado. The spread sheet indicates 12qts of Mobil 1 10w-40 sourced from parts dept at Pioneer Porsche/Audi Denver Oct 1997. Those were the days. The Pioneer dealership went defunct decades ago .... and Mobil 1 as a brand has 19 different formulary's on the auto jobber shelf's today...
Early years Mobil 1, 15w-50 and of late V-twin 20w-50 have served the coupe well. Screw this silly PAG 10w-60 Classic oil nonsense.
03-19-2015, 08:19 AM
#24
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V-Twin has about (just slightly higher) the same ZDDP levels of Mobil 15W50 of days long past. Prior to re formulations.
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03-19-2015, 09:51 AM
#25
rather than obsessing about phantom issues wrt to oil
do some research
API SH was the oil spec for all cars through 1996, that was the year the new zddp reformulations began. The reformations were aimed at fuel economy and emissions control life extension and primarily affected lower weight oils like 0w-30 but have less affect on the heavier weight oils like 15w-50
Here is some data both historic and current that I have collected
From the data I am very comfortable w/ M1 15w-50
one last thing from The Journal of Tribology, while zddp is great in moderation it does increase fiction and too much is as bad as too little
do some research
API SH was the oil spec for all cars through 1996, that was the year the new zddp reformulations began. The reformations were aimed at fuel economy and emissions control life extension and primarily affected lower weight oils like 0w-30 but have less affect on the heavier weight oils like 15w-50
Here is some data both historic and current that I have collected
From the data I am very comfortable w/ M1 15w-50
one last thing from The Journal of Tribology, while zddp is great in moderation it does increase fiction and too much is as bad as too little
03-19-2015, 12:25 PM
#26
03-19-2015, 12:49 PM
#27
03-19-2015, 01:18 PM
#28
Drifting
During the 993 production PAG was uber happy to accept the generous marketing / advertising fee paid by Mobil 1. So happy in fact as to allow a 3"x3" Mobil 1 sticker to be placed on each 3.6 engine. Recall back to the '80's ,,, early '90's, synthetic oil hadn't achieved the market presence as synthetic oil does today.
However, nothing special about the oil used in the Zuffenhausen dyno room; I suppose not.
However, nothing special about the oil used in the Zuffenhausen dyno room; I suppose not.
03-19-2015, 05:03 PM
#30
btw Dr. Ing. h.c. F. Porsche AG, Hans Mezger was the lead designer of these engines
I don't know why any would no consider them to be Mezger engines
From the 996GT3 and 996t the Mezer design was adapted to water cooling(earlier in race cars of course) and these cars w/ DOHC don't use flat tappet cams and aren't as sensitive to zddp as the older SOHC air cooled cars are.