Mobil One 0w40

[PILOON]

I also looked into the 0-40 and when checking specs (mind boggling exercise) could not find that any 0-XX met diesel specs.*
I would suspect that it is all about soot control or possibly valve stem or cam lobe wear.

On the flip side an oil engineer (on TBN) confirmed that diesel spec oil was OK on non diesel engines, in fact he said it would have bonus properties

* did not help in that there seems to be 2 generations of specs that you need to be able to translate (my tractor is mid '80's)

 

[rswyan]

I've recently standardized on M1 0w40 for the Kubota and the wife's VW Passat (gas) ... after I ran it in the van (2006 Dodge Sprinter with a Mercedes 5 cylinder diesel)

Supposedly it was the OE factory fill on the van. Van has roughly 438,000 miles on it and only had one oil change in that time with a different oil (M1 5w40 Turbo Diesel Truck) ... all the rest of them were M1 0w40.

IMHO, it is a very good oil.

 

[3930dave]

I also looked into the 0-40 and when checking specs (mind boggling exercise) could not find that any 0-XX met diesel specs.*
I would suspect that it is all about soot control or possibly valve stem or cam lobe wear.

On the flip side an oil engineer (on TBN) confirmed that diesel spec oil was OK on non diesel engines, in fact he said it would have bonus properties

* did not help in that there seems to be 2 generations of specs that you need to be able to translate (my tractor is mid '80's)

View attachment Duron_0W40_TechData_IM-8040E.pdf

Up here, you should be able to get this Duron Piloon. Sorry OP, probably not easy to find down your way....

On your 80's tractor P, if it was say spec'd for something like CD or CF, you could use anything up to the latest CK spec oil. Do NOT go near the new FA spec oils, as they are only for the latest production Highway tractors....

(CK back-specs to CJ, CI, ...... CF, CD..... Whereas FA is a totally new independent class of diesel oil ).

Many modern diesel oils are "Fleet" oils, so they also have an S_ spec for gasoline use. A 2017 gas car engine may have a newer S_ spec requirement than older-stock Fleet diesel oils can meet though....

Rgds, D.

 

[marchanna]

I don't think the M1 0W40 would be a good choice for your tractor. As far as I can tell it doesn't meet the spec. I've used that oil in my gassers for years and I'm quite happy with it, but as some of the other posters mentioned, you need an oil that is able to suspend soot particles and resist all the other crap that happens to diesel oil. I think you run the risk of sludging with that oil.

Mobil has plenty of other good oils to choose from. I think you're best to stick with a 40-weight because I find I burn a lot less oil. Either a 0 or 5 cold flow weight is fine, you won't notice the difference. You don't have to worry about emissions stuff either, so don't worry about low SAPS formulations, they don't lubricate as well anyways and cost a lot more money.

 

[rswyan]

I don't think the M1 0W40 would be a good choice for your tractor. As far as I can tell it doesn't meet the spec. I've used that oil in my gassers for years and I'm quite happy with it, but as some of the other posters mentioned, you need an oil that is able to suspend soot particles and resist all the other crap that happens to diesel oil. I think you run the risk of sludging with that oil.

Dunno what spec you are referencing above, but based on my experience, sludging simply won't happen ...

That experience includes running M1 0w40 in a diesel vehicle for over 7,000 hours, with the average oil change interval being around 15,000 miles (which is a minimum of 250 hours on the oil per oil change) ... in all types of conditions (Laredo, TX in the summer to Red Deer, AB in the winter ... with plenty of idling)

 

[marchanna]

Dunno what spec you are referencing above, but based on my experience, sludging simply won't happen ...

That experience includes running M1 0w40 in a diesel vehicle for over 7,000 hours, with the average oil change interval being around 15,000 miles (which is a minimum of 250 hours on the oil per oil change) ... in all types of conditions (Laredo, TX in the summer to Red Deer, AB in the winter ... with plenty of idling)

At 250 hours and 15,000 miles there couldn't be any idling time. That would be virtually 100% highway driving, which is very easy on a Diesel engine and its oil. I don't mean to sound standoffish but your numbers seem a little suspect. Are you also implying that you have 420,000 miles on your diesel?

Sludging is a real risk for Diesel engines, suspended particles can drop out of suspension almost instantly once it hits the tipping point. But I'll defer to any chemists on the forum to explain that principle in detail.

 

[rswyan]

At 250 hours and 15,000 miles there couldn't be any idling time.

That why I stated it was a MINIMUM of 250 hours ... I even underlined it.

In reality, it was likely many more hours ... due to all the idling, lower average speed, etc.

Since my van doesn't have an hour meter but only an odometer, I simply took the number of miles divided by 60 mph to come up with a MINIMUM of hours it could have on it - IOW: best case scenario

That would be virtually 100% highway driving, which is very easy on a Diesel engine and its oil.

No kiddin' ...

I don't mean to sound standoffish but your numbers seem a little suspect.

In what regard ?

Are you also implying that you have 420,000 miles on your diesel?

No, I wasn't implying that at all - if you noted my earlier post (before the one you replied to) I stated that I have over 438,000 miles on it:

​

 

[marchanna]

Sorry, I'm putting the pieces together now. I was reading this on my phone.

I believe the factory fill on you Sprinter would (should) have been M1 0W30 or 5W30 ESP as per the MB 229.31, 229.51, and 229.52 specs. There has been quite a bit of chatter about dealers putting the wrong oil in the MB diesels causing the motors to seize. The gasoline spec is 229.5.

. . . just a bit of fair warning.

 

[Texasmark]

I also looked into the 0-40 and when checking specs (mind boggling exercise) could not find that any 0-XX met diesel specs.*
I would suspect that it is all about soot control or possibly valve stem or cam lobe wear.

On the flip side an oil engineer (on TBN) confirmed that diesel spec oil was OK on non diesel engines, in fact he said it would have bonus properties

* did not help in that there seems to be 2 generations of specs that you need to be able to translate (my tractor is mid '80's)

I have yet to find a C rated oil that didn't also show a S rating, supporting your comment.

 

[3930dave]

I have yet to find a C rated oil that didn't also show a S rating, supporting your comment.

I like many of today's diesel fleet oils. There can be a downside though to assuming that they are automatically "better" for gasoline applications - they may not meet the latest specs (ex. SN) - not common, but may be an issue in an emission warranty situation.

Best to understand exactly what the engine OEM calls for specs, and compare to oil labels. There can be some old stock kicking around in slow moving stores too.....

Not common to find at retail, but there are still monograde diesel oils available, that are not S_ rated for gasoline use.

Shell ROTELLA(R) T1 Heavy Duty Diesel Engine Oil | Shell ROTELLA(R)

Rgds, D.