Need to know what Chevy recommends for oil wieght and type for my 04' 3500 Silverado Duramax Diesel. Owners manual is generic wthout mention for this truck..
Thanks
Enthusiast
oil weight/type Duramax 6.6 Silverado
Need to know what Chevy recommends for oil wieght and type for my 04' 3500 Silverado Duramax Diesel. Owners manual is generic wthout mention for this truck..
Thanks
GMC World Class Technician
Up until recently my dealer was using Delo 400 15W40 LE oil. We have now changed suppliers and are now using a Mobil Delvac 15W40 LE of some type. Regardless, neither one is synthetic.
1998 Chevy k-2500 454 147,000 miles and climbing!
1993 Pontiac G/A Big Block 3.3 Liter 140,000 miles and still going too!
Administrator
The standard recommendation is 15w-40, CI-4 oil (the API rating is as important as the grade). You can use 5w-40, or 0w-30 in extreme cold climates. Synthetic or dino.
You should have received the Diesel supplement with your owner's manual. If not, you can get one from your dealer, Helms, or online.
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