running spartan 275... whats the best oil?

[abruno25]

i'm running the spartan 275 tune and using regular oil.. looking to change over to synthetic... whats the best oil to use and how many miles are you changing it?

[08stroker250]

I use Valvoline 5w40 synthetic and my truck loves it

[Moroney167]

Runnin 250 tune for the most part. Truck has Mobile 1 syn. in it now. Switchin to Amsoil 5-30 come next change in time for winter. Deff run synthetic. Truck will love you for it.

[abruno25]

Originally Posted by 08stroker250

I use Valvoline 5w40 synthetic and my truck loves it

do you know whats a normal EOT for you?

[psdguy97]

Amsoil dude. I'm going to swtich to it in my 7.3

[abruno25]

i was getting it by the gallon, now going to be putting it in by the quart, what will it take? 15 quartes? and how many mile are u guys changing it witht the synthetic?

[08stroker250]

Originally Posted by abruno25

do you know whats a normal EOT for you?

The highest I have ever seen it is 208. City driving it stays between 197-199. Highway driving....depending on how hard I am driving and how hot it is outside...I see 199-208. It doesn't get above 203 until I am above 85 mph and temps are 90+ with 75%+ humidity.

[abruno25]

i have been running a non synthetic 5-40 and changing it every 2500 miles just because i get the oil at a 5 finger discounted price.... but i have been running the 275 and i was thinking that the synthetic would be better with the tune...