ANYTHING NEW ON THE MOBIL 1 FRONT?
02-03-2008, 08:19 AM
#31
Rennlist Member
Those not in North America might just be better sticking to European brands, like Fuchs, Lubromoly, Motul, Elf, Pentosin, etc. Just look at the label and you'll be more than likely to find an API SJ or SL rated 0 or 5w40 (the thicker 5w40 being preferred for all but the coldest sub zero daily starts).
Also, there is a Mobil 1 Special Synth V 5w40 API SJ VW 505.01 spec oil which I would imagine would be a phenomenal oil to use, as that particular VW spec is quite rigorous for their V10 TDI and W8/W12 engines alike which is only available in Europe.
Also, there is a Mobil 1 Special Synth V 5w40 API SJ VW 505.01 spec oil which I would imagine would be a phenomenal oil to use, as that particular VW spec is quite rigorous for their V10 TDI and W8/W12 engines alike which is only available in Europe.
02-03-2008, 10:02 AM
#33
Which motor oil do I (Charles Navarro) use in my aircooled Porsche?
Although there are many excellent motor oils out there, considering the wide array of oils I have access to, I currently am using Brad Penn 20w50 API SJ for the summer and winter months in my aircooled Porsche since it never sees sub-freezing starts. The Brad Penn Penn Grade 1 Racing oil is the same "green" oil everyone was familiar with back when Kendall GT was the best motor oil money can buy, as both the original and this newer product both come from the same facility using genuine Pennsylvania crude. These oils are proven to protect cams, rockers, lifters, and all valve train components as well as provide superior rod bearing life because of their very high HTHS viscosities AND low levels of individual detergents to net a high level of detergency with the use of Ca, Mg, and Na synergistically. Just ask anyone about the "green" Kendall oil from decades past and you'll know why we like it so much.
If I were to have sub-freezing starts, I would probably use the Swepco 306 15w40 API CI-4. Swepco comes highly recommended by Jerry Woods, a very well-respected and experienced Porsche engine builder. Both these oils are highly refined paraffin base stocks, and I feel they are excellent choices for my aircooled 911 with oil changes both in the fall and spring, as my 911 is not a daily driver, but does see year round service.
In my two newer vehicles, both of which are Volkswagens, they require a VW 505.01 specification motor oil, and I use Motul 5w40 505.01 specific, which is an API SJ rated semi-synthetic.
Although there are many excellent motor oils out there, considering the wide array of oils I have access to, I currently am using Brad Penn 20w50 API SJ for the summer and winter months in my aircooled Porsche since it never sees sub-freezing starts. The Brad Penn Penn Grade 1 Racing oil is the same "green" oil everyone was familiar with back when Kendall GT was the best motor oil money can buy, as both the original and this newer product both come from the same facility using genuine Pennsylvania crude. These oils are proven to protect cams, rockers, lifters, and all valve train components as well as provide superior rod bearing life because of their very high HTHS viscosities AND low levels of individual detergents to net a high level of detergency with the use of Ca, Mg, and Na synergistically. Just ask anyone about the "green" Kendall oil from decades past and you'll know why we like it so much.
If I were to have sub-freezing starts, I would probably use the Swepco 306 15w40 API CI-4. Swepco comes highly recommended by Jerry Woods, a very well-respected and experienced Porsche engine builder. Both these oils are highly refined paraffin base stocks, and I feel they are excellent choices for my aircooled 911 with oil changes both in the fall and spring, as my 911 is not a daily driver, but does see year round service.
In my two newer vehicles, both of which are Volkswagens, they require a VW 505.01 specification motor oil, and I use Motul 5w40 505.01 specific, which is an API SJ rated semi-synthetic.
02-03-2008, 12:25 PM
#34
Drifting
Hello Charles. My head is still spinning from reading the very long thread at Pelican on this subject yesterday. I did learn a ton. Thanks for your contribution. I think your recommendations below summarize much of the thread. The question I do have is in regard to viscosity. Porsche recommended 40W yet many are running 20W50.(forget about the first number in multi's as this applies to cold start viscosity right?) If the ambient range is 40F-85F, for street use, is a 20W50 too viscous?
My other conclusion is that a few other oil mfg's have acceptable oils also. They are generally quite expensive such as Royal Purple, Amsoil, Castrol Syntec, Redline and Mobil V1 Twin.
My other conclusion is that a few other oil mfg's have acceptable oils also. They are generally quite expensive such as Royal Purple, Amsoil, Castrol Syntec, Redline and Mobil V1 Twin.
02-03-2008, 12:59 PM
#35
ZDDP ( zinc dialkyl dithiophospate) is an exteme pressure additive. it also has some dispersant and antioxidant benefits. It protects sliding cams (typical). Zinc diaryl dithiophospate has also been used over the years. Mainly for diesel engines ( higher temp applications) but for roller cams. The problem is that many of these additives need to be limited so as to not adversly affect the catalysts. I believe it is most important to get the latest/updated info/opinion from the auto manufacturer.
02-03-2008, 01:10 PM
#37
I went round and round with my Porsche dealer. They insist that all cars get 0w50 Mobil 1. This is the same thing that goes in the newer cars. I said that 0w oil did not exist in 1997, they wouldn't budge.
02-03-2008, 01:27 PM
#38
Based on the design of the variocam plus on the newest models, I would think the pressure on the cam lobes would be much higher than in the older cars ( surface area difference). Either the newer cam lobes are harder or Porsche is not worried about/doesn't care about wear ( your problem when it is long out of warrantee). They, as well as other manufacturers need to accept the new (industry standard) oils.
02-03-2008, 01:37 PM
#39
RL Technical Advisor
Remember one key point,..its YOUR car (not the dealer's) and you are responsible for all the expenses and repairs.
Dealers must support the "Company policy" and most of them are totally unaware of the changes in oils and their effects. I'm sorry to say this, but they are the direct beneficiaries from using such products and there is a potential conflict of interest here.
Use the good stuff and your pocketbook will be happier,...
02-03-2008, 01:54 PM
#40
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The dealer's response reminds of the old days when dealers used Pennzoil ("Black Death"), because Pennzoil gave them good prices and even painted the service department...
02-03-2008, 02:29 PM
#41
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Same here in SA. I have always had my annual service done by the Porsche distributor and 0w50 Mobil 1 is recomended and used. I also discussed
useing this after reading posts last year on the oil issue and was told that this was a factory statement.
Hard to argue with that.
I'm sure that the factory and all the ongoing research they must do would not insist on Mobil 1 if it was not up to the mark. I presume that our version of Mobil 1 is the EU type which might differ from the US type. All very confusing!
I would really like to have response from Mobil.
useing this after reading posts last year on the oil issue and was told that this was a factory statement.
Hard to argue with that.
I'm sure that the factory and all the ongoing research they must do would not insist on Mobil 1 if it was not up to the mark. I presume that our version of Mobil 1 is the EU type which might differ from the US type. All very confusing!
I would really like to have response from Mobil.
02-03-2008, 03:14 PM
#42
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That is all the Porsche Dealers have in stock, for all the reasons mentioned above.
02-03-2008, 04:13 PM
#43
02-03-2008, 04:30 PM
#44
Race Director
Based on Steve's recommendation I ordered a case of Swepco from LNengineering mentioned earlier in the thread.
02-03-2008, 04:41 PM
#45
Race Director
I'm not denying that a 50 weight wouldn't be better I'm just curious why the dealer would be dispensing 0w50 when Porsche recommends 0w40.
