What oil do you use?

[Dieselmaster]

for the motor - Delo 400 has been the best one I have found... wanted to do the synthetic but can't bring myself to pay for it...

Mobil 1 full synthetic in the tranny... and that's because we get it for free...

 

[Jerry]

Rotella 15w40 in the engine every 5000 mi
Redline 75w90 in the diffs
Redline MTL in the six speed
Redline C+ in the transfer case
Flamingo EP Grease in the zirks

 

[geonc]

Rotella-T 15/40 {$36 case at Sams} every 5kmi{I avg 700 mi a week}
Amsoil Synth Mer-V in the ZF and T-case
Amsoil Synth in both pigs
Amsoil synth grease for the zerks

 

[sub zero]

Engine=whatever the dodge dealer puts in it.
Trans= needs to be done.
Transfer case=needs to be done.
Diffs.=Amsoil synth.

 

[PackRat]

I was a diehard Mobil 10-40 user, cuz that's what my Dad ran for years on a rural mail route, with no oil related problems.

Now that I can buy Valvoline Cummins Premium Blue, for cost, at work, I run it. We run it 30k miles, in the Cats, so I figure it must be pretty good stuff.

Cats: Allied Syn 50 in the gearboxes, and Allied Syn 75-90 in the pumpkins.

Mine: Allied Syn 75-90 in almost everything, else.

Well, except the flamethrower motor in my 49. It uses so much, I buy the cheapest junk I can find. You think a quart every 80 miles, or so, is excessive?

 

[Y2KPSD]

I used Rotella T 15w40 for the first 60,000 miles changing it every 5,000 miles. I've just switched to Amsoil 5w30 synthetic recently. One of our club members (WNYPA)is the local distributer. He says it's good for 30,000 miles but I doubt I'll go that far, maybe 15 or 20,000 miles, depending on the analysis report. I'll just change the filter every 5,000 miles and should be good to go. I'm gonna do Amsoil synthetic from front to back when I get the $$$$.

I've noticed that the truck starts much easier in the cold weather with the synthetic oil, even when it's below zero. I don't plug in the block heater anymore and the truck starts like it's been parked inside all night. I used to get the mini-romps sometimes when it was really cold out but not any more with the Amsoil synthetic.

Y2KPSD

 

[Ops]

Oils

Rotella T 15w-40, BG MOA, 5000 mile interval.

Mopar tranny fluid.

Ops

 

[TBigLug]

Rotella T 15W-40 all the way. Used it on everything on the farm since I was knee high to a grasshopper. Used it in a couple gassers as well.

 

[sle2115]

Delo 400 in the engine
Royal Purple Synthetic everywhere else.

 

[sassyrel]

amsoil 5w30 syn in the tdi--motorcraft 15w40 mineral in the pwrstrk---syntec in the idi---mobil 1 5w30 in the lawntractor

 

[OutofOrder]

5w30 or 10w30 Mobil1 in my mecury sable. I forget exactly which type, but from what I've read there isn't is a significant difference between the two weights.

 

[acousticrawk]

It's all oil, and I'm going to throw it away in 4k kms.

thats a waste! use it as fuel! haha!!

im sold on synthetic in my gas engine. havnt got the diesel yet, so i dunno. but in gas, i love it. i put synthetic in everything! even use synthetic "motion lotion" haha, j/k i would though i guess if i had too!

 

[rubberfish]

That was back when fuel was affordable.
Now I filter it and toss it in the fuel tank.

Welcome to the site,

 

[rip van sparky]

delo 400 in the engine, There's oil in other things? hmmmm.... might have to look this weekend.

 

[OkieTruckerD]

What's RP? What synthetic trans oil is out there that is not sulfur based (for the sake of the bronze components in my ZF-5 shooter). To answer the question, I use Shell Rotella T 15w-40, and Lucas oil stabilizer (going to Rotella T Synthetic 5w-40, and in the boxes)