Huge brain fart with oil

[EWC88]

At Walmart to get oil and I just had huge brain fart on what oil weight our trucks are. I thought 10w-30 but then again I thought 5w-30 lol. Any help be great!

 

[dodge dude94]

5W30 for 3.7, 4.7 and 5.7L engines.
10W30 for 5.9 and 8.0 engines.

 

[stamst60]

All depends on how many miles are on the engine and what climate you are in!!

 

[dodge dude94]

Climate, yes. Mileage, not unless you're running a stupid-high amount of miles. lol

 

[stamst60]

If your running over 200k I would go with a thicker oil. I run 15w40 in my little gas saver. Everything else I use 10w30 with a additive. Usually BG or lucas.

 

[dodge dude94]

Only reason to go with a thicker oil is if you have PROVEN your oil pressure is too low. Otherwise you're just wasting energy (what little there is to be wasted).

 

[stamst60]

It's not a question of oil pressure. Its more of precautionary measures for engine wear. Unless your in a high performance race car where the tolerances are hair tight, you will not notice any loss of power or wasted energy.