10W30 or 10W40?

[motorguy222]

Hey guys.I am some what new to having a truck and I might be doing some hauling in a few days.

It is time to change the oil and I am unsure if I should use 10W30 or 10W40 especially considering hauling.

The truck is a 93 Dodge with the 318 and auto trans. and 167,000 miles.

 

[Merkava_4]

Neither. Go with 15W-40 Chevron Delo.

 

[chubbs1]

Rotella 10w30 is plenty strong. In general most 10w30's will work fine. The Rotella is a little more robust.

 

[motorguy222]

Originally Posted By: Merkava_4
Neither. Go with 15W-40 Chevron Delo.


It can and many times gets pretty cold here,would this be too thick?

 

[steve20]

I would use your regular 5-30 and continue on hauling. Even better would be a 5-30 Dexos approved or Honda approved synthetic

 

[Merkava_4]

Originally Posted By: motorguy222

It can and many times gets pretty cold here,would this be too thick?


When you said 318, I assumed you had flat bottom lifters; you'd need the 15W-40 for that. But for 1993,
you might have a 5.2L V8 with a roller valve train - in which case a 10W-30 would be fine in the winter.