Howdy guys. I just joined after lurking for years. We live in Texas and have all diesels except for one E350 v10. We have 7.3/6.9 IDIs, 7.3 PSDs, a Cummins 855 Big Cam and a 4BT. I settled on Rotella for all, wondering if you have a similar plan. I will use any oil that has sufficient specs, but decided to keep my own stock of Rotella due to supply difficulties recently.
For any diesel that consumes no oil and is not an IDI, I use Rotella T6 5w-40
If a diesel uses/leaks too much, or is an IDI, I use Rotella T4 10w-40
Both Rotellas have become hard to find due to cooties etc. So now I have about 30 gallons of TSC 10w-40 diesel on hand too. I did look closely at its API specs first, and I called the supplier to find out who actually makes it.
My 855 Big Cam has a bypass oil filter. We run coolant filters on pickups (Rotella ELC). Some day we'll do bypass oil filters on all pickups too.
FYI
For any diesel that consumes no oil and is not an IDI, I use Rotella T6 5w-40
If a diesel uses/leaks too much, or is an IDI, I use Rotella T4 10w-40
Both Rotellas have become hard to find due to cooties etc. So now I have about 30 gallons of TSC 10w-40 diesel on hand too. I did look closely at its API specs first, and I called the supplier to find out who actually makes it.
My 855 Big Cam has a bypass oil filter. We run coolant filters on pickups (Rotella ELC). Some day we'll do bypass oil filters on all pickups too.
FYI