David P

I recently bought a 2013 Silverado 1500 WT 4.8L truck with 34K miles on it. The owners manual says to use Dexos1 5W-30 synthetic blend API SN engine oil. I called the dealership where I bought it from to ask what oil they used and they said they put conventional oil in it. I called my local Chevrolet dealership and they said they use Dexos 2 full synthetic oil.

So, we're all over the board and I'd like to know what y'all think. I bought some Mobil 1 Extended Performance 5W-30 Dexos Motor Oil at Walmart yesterday evening, which is a full synthetic oil. Is this okay or should I try to find some synthetic blend oil?

Thanks

oldchevy

I have a 2013 Silverado with the 4.8. I was told when I bought it by the dealer that GM recommends Synthetic Blend only for their vehicles since 2011. That is all I have used since and it has 73,400 miles on it with no problems. Using full synthetic is also good to use.

David P

So you can still find synthetic blend? Where do you buy it?

oldchevy

I buy mine at Walmart. I buy it online and pick it up in the store. Even if the store doesn't normally stock it, you can still buy it online.

David P

Thanks