Guys,
I can't remember what I used to run in my 04.5 3500. It was Amsoil just not sure 5w/40 or 15w/40. What ever it was I ran it all year round here in Saskatchewan Canada with temps in winter ranging from -10 C to -40 C and up to +35 C in summer

Now my 05 3500 needs a change and I would like to run the Amsoil again but which weight is really recommended for my temp range ?
Or should I just switch to the Cummins recommended Valvoline from the Cummins shop ?

Thanks

 

5w-40 is what I run and I have zero issues.

 

Yeah after some reading today I think Im ditching the Amsoil hype and going with Valvoline Premium Blue Extreme 5w-40 synthetic.
If Cummins puts there stamp on it good enough for me

 

Hey, a fellow Saskatoonian!!!!

I run Co-op synthetic 0W40. Its a group IV base stock, full synthetic and made in Regina. Its cheap too, like $6.00 a liter. If you want a good deal on Fleetguard filters, Swift Filtration at 619 50th street east is a good place.

 

Amsoil 5w-40 for me in winter-----15W40 in summer,northwest of the Peace River where my folks farm is, it hit -48C for a few days last year. That's why i put the 5w-40 in cause i usually make one/two winter trips to visit moms hospitality.

 

Rottela 5w-40 Synthetic

 

x 2 I have used it for 5 years now both summer and winter. Cheapest quality Syn. oil and change it 10,000 miles (?Km). I don't use the engine heater until it gets below 0F (?C)

 

Hey guys thanks for all the input...went to the local Cummins shop to get the oil but they were out of 5w40 and he told me they run 15w40 in all there service trucks.
I told him I would think about it as he is getting 5w40 tomorrow.
Not sure now which to go with.

He also suggested a Fleetguard Stratapore oil filter, now I need to research that.
Thanks guys !

 

I'm running petro canada 5w 40, full synthetic year round.

 

Rotella T6 5w-40-- great stuff!

 

so you guys running 5w-40 you run that year round summer and winter months ?

 

I run the 0W40 year round. NO issues. No oil usage at all. For me, the quicker the oil gets pumping, the better it is for my motor. You should check out the specs for that oil, its amazing and its made close to home here. Local refinery, local jobs and local crude used. It is kind of hard to get your head around the 0 part of the oil weight (I think its just that we have been "trained" to think that 0 is bad). Just remember that the 0 weight is when the oil is cold, 40 is when its hot so its the best of both worlds, thin when cold and thick when warm.

A friend is running the 0W40 in his 8080 New Holland combines, semi's and tractors. No oil issues or usage at all. Those engines are 100% duty cycle motors also. When we were combining this last weekend, those motors rarely went under 98% engine load and many times up to 120%. The exhausts and turbos were glowing red at night. Very cool to see.

 

i live just north of prince albert,sk and run co-op 0w40 in the winter.have run this for 6 years with no issue,truck is parked outside and onlu plugged in when the temp is below -10c

 

Wow so many Saskatchewan boys

 

Yes, year round. The thing in the summer you will notice is, it will run cooler also.