It seems 15w-40 is the standard diesel weight. I bought Castrol last time because it was on a good promo sale.... 5 quarts and filter for $5 (after rebate).
Pros: good promo sale
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i always used 15w40. usually shell rotella in all my old diesels. sometimes i used castrol. but it was always 15w40
Pros: used in old diesels
Vehicle:
Volkswagen Jetta
Thanks for selling me the last two bottles of Pentosin!
Pros: last two bottles
Given that it's almost guaranteed that this was not a turbo engine originally (the lack of factory air filter is another clue) she'll run hotter than usual and so a quality oil is a good investment.
Pros: quality oil is a good investment
Cons: run hotter than usual
Vehicle:
Volkswagen Jetta
I recently swapped to German Castrol 0w30, it starts high 30 and stays high 30, so far, I've experienced no oil loss - but it's too early to say, but it makes sense.
Pros: no oil loss
Cons: too early to say
Have also used M1 TDT 5w40 and have had great success
Pros: great success
I was using 1 quart every 1000 miles on my o6 2.0t GTI, I actual changed to 5w40 Mobil Turbo Diesel and have gone down to about 1 quart in about 2200 miles also check you pcv as they are notorious for going bad.
Pros: less oil consumption
Vehicle:
Volkswagen
Mileage: 127134 km
IMO M1 0w40 is a very good oil that may do well in many cars. It is a master at being built to meet manufacturers specs.
Pros: meets manufacturers specs
Cons: high shear, high iron levels
I have been using it for about 15k km and two oil changes and have noticed allot less burn off compared to the dealer filled castrol 5w -40.
Pros: less burn off
Vehicle:
Audi A3
Mileage: 15000 km
The only oil I used in my Audi before Amsoil was Mobil 1, and this far surpasses it.
Pros: far surpasses it
Vehicle:
Audi
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