disappearing oil?
AudiWorld Senior Member
Joined: Oct 2008
Posts: 816
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which Mobil 5W40?
the ESP or the diesel? neither are VW approved and it looks like the ESP is for diesels also?
the only one is 0W40 VW 502.00/505.00/503.01
http://www.mobiloil.com/USA-English/...l_1_0W-40.aspx
the dealers around here use Castrol 5W40 Syntec
it seems to be readily available and priced decently
I do 5k changes, and mostly highway miles...
the ESP or the diesel? neither are VW approved and it looks like the ESP is for diesels also?
the only one is 0W40 VW 502.00/505.00/503.01
http://www.mobiloil.com/USA-English/...l_1_0W-40.aspx
the dealers around here use Castrol 5W40 Syntec
it seems to be readily available and priced decently
I do 5k changes, and mostly highway miles...
Audiworld Junior Member
Joined: Mar 2009
Posts: 13
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everybody has their favorite oil and mine is Motul for my motorcycles. But not in my RS4. With a 10 quart sump, it's crazy IMO. Oil doesn't last longer than 3000 miles in this car due to fuel dilution and loss of viscosity, so I like to run a decent, mid-priced Audi-approved oil such as Pennzoil Platinum Euro 5W-40. I don't think Mobile 1 is even VW502 approved. A fill of Motul runs $150 just for the oil. That's 5 cents a mile and doesn't even include oil filter or labor. Seems crazy to me if you intend to just drain it out in 3000 miles. Besides, oil analysis doesn't show much benefit using Motul in our cars. JMO. After all, this IS an oil thread 
Audiworld Junior Member
Joined: Mar 2009
Posts: 13
Likes: 0
which Mobil 5W40?
the ESP or the diesel? neither are VW approved and it looks like the ESP is for diesels also?
the only one is 0W40 VW 502.00/505.00/503.01
http://www.mobiloil.com/USA-English/...l_1_0W-40.aspx
the dealers around here use Castrol 5W40 Syntec
it seems to be readily available and priced decently
I do 5k changes, and mostly highway miles...
the ESP or the diesel? neither are VW approved and it looks like the ESP is for diesels also?
the only one is 0W40 VW 502.00/505.00/503.01
http://www.mobiloil.com/USA-English/...l_1_0W-40.aspx
the dealers around here use Castrol 5W40 Syntec
it seems to be readily available and priced decently
I do 5k changes, and mostly highway miles...
The Castrol oil used in UK and Australia is VW Longlife III vw 504-507. ( Also known as SLX Powerflow Longlife III in Australia and Castrol Edge 5w-30 in the UK).
Over the last few years Audi/VW has tried to rationalize their very complex oil specification guidelines such that (with a couple of exceptions) all Aud/VWi cars from the smallest Diesel to the largest most powerful petrol engines use the same oil.
I am unsure of the reason why in the US different VW oil specs and viscosities are used. More imporatantly I am unsure if these oils represent a better choice.
AudiWorld Senior Member
Joined: Oct 2008
Posts: 816
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the 5W30 vs 5W40 probably is one of 2 things:
emission/fuel economy related, lighter oil, less drag/pumping losses, etc.
or climatic, we have some warm parts of the country
what is spec'ed for say the middle east or Africa?
emission/fuel economy related, lighter oil, less drag/pumping losses, etc.
or climatic, we have some warm parts of the country
what is spec'ed for say the middle east or Africa?
Audiworld Junior Member
Joined: Mar 2009
Posts: 13
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Well Australia is a very warm country....not actually sure about oil specs for the middle east or Africa. I bet you it is 5W-30.
Thread Starter
Audiworld Junior Member
Joined: Oct 2006
Posts: 52
Likes: 0
which Mobil 5W40?
the ESP or the diesel? neither are VW approved and it looks like the ESP is for diesels also?
the only one is 0W40 VW 502.00/505.00/503.01
http://www.mobiloil.com/USA-English/...l_1_0W-40.aspx
the dealers around here use Castrol 5W40 Syntec
it seems to be readily available and priced decently
I do 5k changes, and mostly highway miles...
the ESP or the diesel? neither are VW approved and it looks like the ESP is for diesels also?
the only one is 0W40 VW 502.00/505.00/503.01
http://www.mobiloil.com/USA-English/...l_1_0W-40.aspx
the dealers around here use Castrol 5W40 Syntec
it seems to be readily available and priced decently
I do 5k changes, and mostly highway miles...
and someone had a line in a reply about heavy driving and lots of stop-and-go traffic. that pretty much defines my daily commute: 100 miles round trip of about 1/3 stop-and-go and about 2/3 80mph cruising (with some spirited passing sprinkled into the highway driving).
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Thread Starter
Audiworld Junior Member
Joined: Oct 2006
Posts: 52
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i'm using the 5W40 Mobil1 for turbo diesels. it was the only 5W40 that the local car parts store had in stock. i picked it to match the grade of oil that Audi put in it at my last change.
and someone had a line in a reply about heavy driving and lots of stop-and-go traffic. that pretty much defines my daily commute: 100 miles round trip of about 1/3 stop-and-go and about 2/3 80mph cruising (with some spirited passing sprinkled into the highway driving).
and someone had a line in a reply about heavy driving and lots of stop-and-go traffic. that pretty much defines my daily commute: 100 miles round trip of about 1/3 stop-and-go and about 2/3 80mph cruising (with some spirited passing sprinkled into the highway driving).
oh yeah: the 'diesel' oil was only the 1 quart that i used to top it off. i'm not sure what exact kind the dealership used.
AudiWorld Senior Member
Joined: Oct 2008
Posts: 816
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The oil used in RS4s outside the USA is vw 504 spec oil. This only comes in 5w-30 weight. Mobil 1 ESP 5w-30 meets these specs.
The Castrol oil used in UK and Australia is VW Longlife III vw 504-507. ( Also known as SLX Powerflow Longlife III in Australia and Castrol Edge 5w-30 in the UK).
Over the last few years Audi/VW has tried to rationalize their very complex oil specification guidelines such that (with a couple of exceptions) all Aud/VWi cars from the smallest Diesel to the largest most powerful petrol engines use the same oil.
I am unsure of the reason why in the US different VW oil specs and viscosities are used. More imporatantly I am unsure if these oils represent a better choice.
The Castrol oil used in UK and Australia is VW Longlife III vw 504-507. ( Also known as SLX Powerflow Longlife III in Australia and Castrol Edge 5w-30 in the UK).
Over the last few years Audi/VW has tried to rationalize their very complex oil specification guidelines such that (with a couple of exceptions) all Aud/VWi cars from the smallest Diesel to the largest most powerful petrol engines use the same oil.
I am unsure of the reason why in the US different VW oil specs and viscosities are used. More imporatantly I am unsure if these oils represent a better choice.
I agree, from the other perspective
, I'm not sure that 5W30 is a better choice, it would seem a compromise that sacrifices engine wear/longenvity for a few 1/10th's mpg...there could be no other reason because you can get 5w30 here just as easy, so it's not:
-availability
-climate
-and may be MPG
the 5w40 would be less volatile (higher flash point) and lead to less deposits, and has better high temp performance (viscosity and shear)...
most high speed V8's run a thicker oil, some as high as 10W60
Last edited by ArthurPE; Jan 8, 2010 at 09:20 AM.