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Discussion Starter #1
Just got back from the local wal-mart! Mobil 1 trk & suv is back on the shelves!!!!!!!!!!!!!!!!!!! Only in 5w-30 format here though.-:t
 

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They are coming out with a new Mobil 1 Turbo Diesel Truck (5W-40) oil, I believe they said in April.

Does anyone know if they are still making Delvac 1 synthetic 5W-40?
 

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Cool.
 

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here is the new Mobil 1 Turbo Diesel 5w-40
Amsoil makes a 5W-40 turbo diesel european car formula that has the CI rating. Been running it all winter with good results.
 

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Amsoil makes a 5W-40 turbo diesel european car formula that has the CI rating. Been running it all winter with good results.
Are you sure it really does have a CI rating, or does it just have CI equivalency? When I was running Amsoil, they didn't have actual certifications on any of the full synthetics. I didn't really care, but I'm just curious if they have decided now to actually get the certifications.
 

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Try telling that to the GM warranty adjuster "But...but...but, the multi-level-marketing salesman told me it was equivalent to API CI?"
 

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Discussion Starter #9 (Edited)
A dealer in so-cal did some repairs for me last year, while at it an oil change also. A gas rated mobil-1 10w-30 was used, when I found out I had them call the factory to see if this was acceptable. FWIW the factory gave their blessings on this, seemed to be ok on all things with the mobil-1 label, no matter what the SAE/API rating was !
 

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Discussion Starter #10
Just got back from the local wal-mart! Mobil 1 trk & suv is back on the shelves!!!!!!!!!!!!!!!!!!! Only in 5w-30 format here though.-:t
Rumor has it that it is only gas rated, I didn't look to make sure!:cookoo: But check my previous post!
 

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Discussion Starter #11
They are coming out with a new Mobil 1 Turbo Diesel Truck (5W-40) oil, I believe they said in April.

Does anyone know if they are still making Delvac 1 synthetic 5W-40?
Still making it! But the only place I've found it is at Petro truck stops, $28 a gal.
 

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Amsoil makes a 5W-40 turbo diesel european car formula that has the CI rating. Been running it all winter with good results.
After further review, it seems Amsoil has changed their mind about the CI-4 rating for this oil. I could have sworn when I bought it it had that rating equivalency, but now it does not.

Still been running it all winter, with no problems.
 
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