Limited choice of engine oil
04-24-2011, 09:32 PM
#16
RL Technical Advisor
Hi all,
I read about engine oil thread across the forum these days. And know that not every type of oil even in same grade is suitable for our air-cooled engine.
I noted the best choice are the brands Prad Penn, Swepco, Mobil V-twin and MX4T.
However, in my places, all of the above are not available.
Most closest choice I can get are Motul 300V Competition 15W 50 and Silkolene Titan Race Pro R 15W 50. Silkolene is cheaper than Motul here.
Please help on the selection. 99% of time is street use.
Thanks a lot.
I read about engine oil thread across the forum these days. And know that not every type of oil even in same grade is suitable for our air-cooled engine.
I noted the best choice are the brands Prad Penn, Swepco, Mobil V-twin and MX4T.
However, in my places, all of the above are not available.
Most closest choice I can get are Motul 300V Competition 15W 50 and Silkolene Titan Race Pro R 15W 50. Silkolene is cheaper than Motul here.
Please help on the selection. 99% of time is street use.
Thanks a lot.
04-24-2011, 10:36 PM
#17
Racer
Thread Starter
I doubt there are many P-car mechanics in HK who speak "air-cooled", and are up to date on the latest formulations of oils they have used for many years. Porsche has been selling and training "water pumpers" for a long time now.
04-24-2011, 10:39 PM
#18
Racer
Thread Starter
Thanks for input. However, I can' t get it locally. I also notice Swepco is one of the good choice.
Just use the Swepco 306 supreme oil.
I get a case for $120.00 from my area Swepco rep.
Has all the right additives plus some friction modifiers.
Steve Werner tested it on a engine dyno with 911 engine compared to all the other leading brands-mobil 1 etc. & noted 8hp gain.
I get a case for $120.00 from my area Swepco rep.
Has all the right additives plus some friction modifiers.
Steve Werner tested it on a engine dyno with 911 engine compared to all the other leading brands-mobil 1 etc. & noted 8hp gain.
04-24-2011, 10:43 PM
#19
Racer
Thread Starter
thanks for advise and comfort.
I think entire life of my 964 was not feed with good oil in the past ownerships. I think I need to start from my own.
I think entire life of my 964 was not feed with good oil in the past ownerships. I think I need to start from my own.
It is a mine field i know, just consider that some of the suggestions on oil are not the best choices as you say in your first post, but possibly personal choices. You could ask a Porsche dealer for some advice too, they do know a thing or too about cars 
Don't forget (me included) we cherish them, but these cars are 20 years old and have been half way to the moon on all kinds of normal oil and with all sorts of history.
If the car has history with a specific oil though, and you have had no problems stick with it, as consistency has been mentioned for helping seal condition in the past. I have no supporting evidence for this, but all additives work in differing ways and changing something for the sake of changing may not be entirely beneficial.
Don't forget (me included) we cherish them, but these cars are 20 years old and have been half way to the moon on all kinds of normal oil and with all sorts of history.
If the car has history with a specific oil though, and you have had no problems stick with it, as consistency has been mentioned for helping seal condition in the past. I have no supporting evidence for this, but all additives work in differing ways and changing something for the sake of changing may not be entirely beneficial.
04-24-2011, 10:50 PM
#21
Racer
Thread Starter
Really thanks Steve for your professional input and specific advice. I can make the decision.
I notice you hv surgery from another thread. Hope you get well soon.
Motul 300V is an excellent product and highly recommended, especially if the car sees track use. I have no experience with Silkolene in these engines so I cannot offer anything constructive on that one.
I notice you hv surgery from another thread. Hope you get well soon.
Hi all,
I read about engine oil thread across the forum these days. And know that not every type of oil even in same grade is suitable for our air-cooled engine.
I noted the best choice are the brands Prad Penn, Swepco, Mobil V-twin and MX4T.
However, in my places, all of the above are not available.
Most closest choice I can get are Motul 300V Competition 15W 50 and Silkolene Titan Race Pro R 15W 50. Silkolene is cheaper than Motul here.
Please help on the selection. 99% of time is street use.
Thanks a lot.
I read about engine oil thread across the forum these days. And know that not every type of oil even in same grade is suitable for our air-cooled engine.
I noted the best choice are the brands Prad Penn, Swepco, Mobil V-twin and MX4T.
However, in my places, all of the above are not available.
Most closest choice I can get are Motul 300V Competition 15W 50 and Silkolene Titan Race Pro R 15W 50. Silkolene is cheaper than Motul here.
Please help on the selection. 99% of time is street use.
Thanks a lot.
04-24-2011, 10:57 PM
#22
Racer
Thread Starter
04-25-2011, 09:28 AM
#23
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Join Date: May 2007
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diesel oil
I don't know if there are any differences between different brands. The most common is 15W40. You can get synthetic or normal. The original fill on the 964 from Porsche was Shell Rotella 15W40.
04-25-2011, 09:31 AM
#24
Rennlist Member
Motul is a fine oil to use as is Silkolene...Both are ester based and very robust oils. I'd also add an HDEO oil like Rotella or Delvac 15w40 to the list if you have access to those oils and you'd like to use a mineral HDEO.
04-25-2011, 11:47 AM
#25
Racer
Thread Starter
04-25-2011, 12:38 PM
#26
Just to add: I wouldn't ask a mechanic at a main dealer as they are watercooled trained mostly as suggest, but i would ask Porsche. They release an oil approval list, and that is what i was refering to (Porsche A40 Type approval 84 on)
Anyway just for comparison and to add more info than needed
I took this from Mobil site:
For older, flat tappet engines where wear may be more of a concern, we offer a number of oil products which are higher in phosphorus than API SM/ILSAC GF-4 oils. These include Mobil 1 15W-50 (1,200 ppm), Mobil 1 0W-40 (1,000 ppm) and Mobil 1 High Mileage 5W-30, 10W-30 and 10W-40 (900 ppm). For all newer engines and flat tappet engines in normal service, API SM/ISLAC GF-4 oils are preferred for better fuel economy and for the protection of catalytic systems with lower phosphorous (800 ppm).
They have also just changed some of the formula's and include a fully synthetic 10w60 in the Mobil range. never tried it but looks interesting if you need it thick to combat leaks when hot. Or the new Mobil Super 2000 X1 10W-40 semi which (if i'm reading it right) contains 1400ppm Phosphorous so more than Bradd Penn? Not sure?
Probably muddy's the water a little more, but in some ways helps. A good oil is a good oil (mostly) so buy a reputable brand and change it regularly and you will be fine.
Anyway just for comparison and to add more info than needed
I took this from Mobil site:
For older, flat tappet engines where wear may be more of a concern, we offer a number of oil products which are higher in phosphorus than API SM/ILSAC GF-4 oils. These include Mobil 1 15W-50 (1,200 ppm), Mobil 1 0W-40 (1,000 ppm) and Mobil 1 High Mileage 5W-30, 10W-30 and 10W-40 (900 ppm). For all newer engines and flat tappet engines in normal service, API SM/ISLAC GF-4 oils are preferred for better fuel economy and for the protection of catalytic systems with lower phosphorous (800 ppm).
They have also just changed some of the formula's and include a fully synthetic 10w60 in the Mobil range. never tried it but looks interesting if you need it thick to combat leaks when hot. Or the new Mobil Super 2000 X1 10W-40 semi which (if i'm reading it right) contains 1400ppm Phosphorous so more than Bradd Penn? Not sure?
Probably muddy's the water a little more, but in some ways helps. A good oil is a good oil (mostly) so buy a reputable brand and change it regularly and you will be fine.
Last edited by Unkle; 05-21-2011 at 04:20 PM.
04-25-2011, 10:43 PM
#27
Racer
Thread Starter
Just to add: I wouldn't ask a mechanic at a main dealer as they are watercooled trained mostly as suggest, but i would ask Porsche. They release an oil approval list, and that is what i was refering to (Porsche A40 Type approval 84 on)
Anyway just for comparison and to add more info than needed
I took this from Mobil site:
For older, flat tappet engines where wear may be more of a concern, we offer a number of oil products which are higher in phosphorus than API SM/ILSAC GF-4 oils. These include Mobil 1 15W-50 (1,200 ppm), Mobil 1 0W-40 (1,000 ppm) and Mobil 1 High Mileage 5W-30, 10W-30 and 10W-40 (900 ppm). For all newer engines and flat tappet engines in normal service, API SM/ISLAC GF-4 oils are preferred for better fuel economy and for the protection of catalytic systems with lower phosphorous (800 ppm).
They have also just changed some of the formula's and include a fully synthetic 10w60 in the Mobil range. never tried it but looks interesting if you need it thick to combat leaks when hot. Or the new Mobil Super 2000 X1 10W-40 semi which (if i'm reading it right) contains 1400ppm Phosphorous so more than Bradd Penn? Not sure?
Probably muddy's the water a little more, but in some ways helps. A good oil is a good oil (mostly) so buy a reputable brand and change it regularly and you will be fine.
Anyway just for comparison and to add more info than needed
I took this from Mobil site:
For older, flat tappet engines where wear may be more of a concern, we offer a number of oil products which are higher in phosphorus than API SM/ILSAC GF-4 oils. These include Mobil 1 15W-50 (1,200 ppm), Mobil 1 0W-40 (1,000 ppm) and Mobil 1 High Mileage 5W-30, 10W-30 and 10W-40 (900 ppm). For all newer engines and flat tappet engines in normal service, API SM/ISLAC GF-4 oils are preferred for better fuel economy and for the protection of catalytic systems with lower phosphorous (800 ppm).
They have also just changed some of the formula's and include a fully synthetic 10w60 in the Mobil range. never tried it but looks interesting if you need it thick to combat leaks when hot. Or the new Mobil Super 2000 X1 10W-40 semi which (if i'm reading it right) contains 1400ppm Phosphorous so more than Bradd Penn? Not sure?
Probably muddy's the water a little more, but in some ways helps. A good oil is a good oil (mostly) so buy a reputable brand and change it regularly and you will be fine.
