Take those back and get a 2.5 gallon jug of Mobile 1 Delvac plain Jane version. Easy to source at your local Wally world.

I would wager Billions (yes B) of trouble free miles have been logged using it. Fancy names doesn't always make it better.

 

IS the Mobil 1 Delvac same as the gallon jug I have?

 

Google broken again?

 

No. G double O GLE tells me in 10 seconds that:

Delvac ESP is full synthetic @$47 per gallon
Delvac 1300 is synthetic blend @$38 for 2.5 gallons.

 

Not Delvac 1300... Mobil 1 Turbo Diesel, the full synthetic stuff AND Mobil Delvac 1 ESP.

 

I've used Mobil 1 for turbo diesels in my truck since that oil came out - around 2003-04 if I remember right. Recently, (last oil change) I switched to Delvac Extreme. It's full syn 15w-40 - which is what is specc'd for these trucks. I actually like it better than the Mobil 1 stuff since it's 15-40 and not 5-40, it seems to give me a bit better oil pressure. It's also about $5 a gallon cheaper than the turbo diesel stuff.

 

Why wouldn’t a thicker oil give higher oil pressure?

If a thinner oil takes less pressure to push, how would that be a bad thing?

 

I saw a graph once about multi viscosity oil. At low temperature the oil acts like a low viscosity oil, and at higher temps it acts like a 40 wt oil, but it's true viscosity at operating temp was higher than 5 or 15 weight, but was less than 40.

 

Delvac Extreme - FULL Synthetic

 

Let me ask another way.
Does this

equal this?

And what's the difference and why?

 

I would guess different additives in each or varying amounts of additives

 

Now I find this on the Mobil web site:

A 0W-40? How would this oil fare on a hot Nevada highway?

 

Pick an oil weight your owners manual recommends. Gm vehicles tell you on the oil fill cap what oil weight is acceptable as a bare minimum. I use rotella t6 15-40. My truck is supposed to have 15-40 oil so I went with t6 full synthetic. I know t6 is hard to find so for the last few months I've been stockpiling a little in order to have time to find the next oil change.

If your doing your own oil changes make sure you have enough on hand to do a few while you look for oil until the idiot in dc is out of power and we start producing energy again instead of relying on terrorists dictators and Ukrainian/Russian thugs for energy.

 

IDK what the diff is or if they can mix but if you called the people that make the stuff & they give you 2 different answers I wouldn't do it. And I wouldn't take anyone's word on a forum if I could mix them either. Go & get the same oil.

 

Makes me really miss @AlisoBob

 

Speaking of-- where did he go?

 

#1 would be fine unless heavy hard towing, the door #3. Door #2 would be like a dump truck dealing with lower speed, hard pull in construction/dirty service.

I would go with #1 for my 10k# travel trailer towing at 65mph and lower.

 

Good post guys. Thanks.

Not meaning to go too far off subject... but there was an old saying back in the day that : "It took a Carter to get a Reagan", it took an "Obama to get a Trump." I can't help but wonder what the next one will look like.

Mike

 

“Trust, but verify”… Reagan was a soft spoke Trump… as advised, “walk softly, but carry a big stick.

 

Amazing how our members turn an oil discussion into a political bashing of the President.

 

Seems appropriate oil=politics. I did disagree with the comment someone made about Biden being an idiot. That is false. He used to be an idiot, now he's senile...and dangerous.