[stormtigers]

Hi Fellas,

From what understand DIESEL grade OIL's have more detergents etc in them to clean the engine. But if used in a non-diesel motro there can be side effects.

So the questions are

1. Do you use diesel in your non diesel engine - and if so how often ?

2. What are the negatives to using diesel oil in a non diesel engine that you may have experienced ?


Thanks

 

[sbaert]

There are no negatives to using the proper grade diesel oil in a W124 gasser engine.

MB factory filled ALL their passenger car engines (gassers & diesels) with diesel rated 15W-40.

I use Chevron Delo400 in my E300 as well as both E320s without any side effects.

 

[stormtigers]

That's the sorta thing I want to hear thanks sbaert !!!!!!

I had read this statement and found it a bit of a concern.

"...Diesel engine oil has more additives per volume. The most prevalent are overbase detergent additives. This additive has several jobs, but the main ones are to neutralize acids and clean. Diesel engines create a great deal more soot and combustion byproducts. Through blow-by, these find their way into the crankcase, forcing the oil to deal with them. When you put this extra additive load in a gasoline engine, the effects can be devastating to performance. The detergent will work as it is designed and try to clean the cylinder walls. This can have an adverse effect on the seal between the rings and liner, resulting in lost compression and efficiency...."

That's why I raised the question but I suspect that information is likely attributable to much older (pre 80's) and perhaps much more recent engines ?

 

[bmwpowere36m3]

No issue… most important is selecting the appropriate oil weight, regular oil changes and sticking with quality name-brand oils (Mobil, Shell, Pentosin, Lubromoly, Redline, etc…). Now synthetic vs. dino is another debate.

The issue raised above, is true for any high-mileage and/or neglected car… switching to synthetic oil or oil with high-levels of detergents can clean off deposits/sludge, which might cause some leaks.

 

[Clarkz71]

The current spec for oil in gas engines is 229.5

For diesels it's 229.51

This isn't the 90's and there is a big difference in additive packages.

I use oil that meets current and past MB spec. Motul 5W40 8100 meets 229.5 & 226.5
This oil meets API SN and diesel CF ratings.

My M119 maintains excellent oil pressure with this.

 

[bmwpowere36m3]

I wouldn't get too wrapped up in MB's oil specs… they have specs for EVERYTHING. I'm not saying don't follow MB's recommendations, but using a non-MB approved oil doesn't mean disaster either. There are a lot of good oils out there. If you really want to learn, search this site: BITOG and do a few oil sample analyses (I did many with my M3).

 

[Clarkz71]

I wouldn't get too wrapped up in MB's oil specs… they have specs for EVERYTHING. I'm not saying don't follow MB's recommendations, but using a non-MB approved oil doesn't mean disaster either.

Well, I'm a Benz tech so I have a little more insight
on this. Use want you want. I've been researching
oil for years and I choose to stick with MB Spec.

I suggest others do the same.

Engine oil is not like wheel bearing grease or
gear oil. The spec is a little more important.

 

[stormtigers]

Hey Guys

Have you heard of this oil ???
New here in Australia from a company Ruscoforce in Belgium (Russian perhaps ?)
Claiming MB 229.1 standard (easy to do but not without risk if you don't have the approval)

Automotive :: Fleet & Truck :: Seneca Extra HPD SAE 15W40 - Chief Oil - The sign of the leader

 

[Clarkz71]

Hey Guys

Have you heard of this oil ???
New here in Australia from a company Ruscoforce in Belgium (Russian perhaps ?)
Claiming MB 229.1 standard (easy to do but not without risk if you don't have the approval)

MB 228.3 & 229.1, good oil.

 

[bmwpowere36m3]

Well, I'm a Benz tech so I have a little more insight
on this.

I don't want to come off rude, but that doesn't mean anything. There are good and bad techs. Those with a lot of knowledge and others without. While I'm not questioning your credentials, my family is in the business as well operating a indy shop for 30 yrs specializing in MB, BMW and Audi. So who’s statement carries more weight, yours or mine? Like I said, this is my opinion based on years of experience and results of doing oil analysis.

Use want you want. I've been researching
oil for years and I choose to stick with MB Spec.

I suggest others do the same.

Engine oil is not like wheel bearing grease or
gear oil. The spec is a little more important.

Oil threads are like religious debates, everyone has an opinion and it isn't always backed by facts. I have run Shell Rotella T6, Mobil 1 synthetic, Pentosin Pento HP, Motul 8100 & Lubro Moly synthoil and all came back with great oil analysis results. I could have sworn someone started a thread (it was locked) about MB wheel bearing grease and arguing about only using MB-approved grease.

Our W124s are nothing special… granted we are on the forums, so we are enthusiasts who care more so about our cars than the general public. If you can, run MB-approved oil or any quality oil. Most importantly change the oil/filter regularly and stick with the appropriate oil weight for the engine/climate. It wouldn’t hurt once in a while to do an oil analysis to see the condition/wear of the engine.

 

[Clarkz71]

I don't want to come off rude, but that doesn't mean anything. There are good and bad techs. Those with a lot of knowledge and others without. While I'm not questioning your credentials, my family is in the business as well operating a indy shop for 30 yrs specializing in MB, BMW and Audi. So who’s statement carries more weight, yours or mine?

I wouldn't say rude, maybe you just don't have a clue of my experience.

But you sound like one of the many independents I've seen that uses green
coolant and says it doesn't matter.

Our W124s are nothing special…

Maybe that's your problem.

 

[Clarkz71]

It always amazes me how I give sound advise based on MB recommended
specifications, never said diesel oil was bad, and someone questions my experience.

The fact remains, diesel oil uses a different additive package.

Using a MB spec oil will not harm your engine.

Using a non MB spec oil "can be" a gamble.

Everybody preaches, use only Dexron III trans oil, use only MB or Zerex G-05.

But when it comes to oil, no one wants to use MB spec products.

Whatever.

 

[zorecati]

I don't want to come off rude, but that doesn't mean anything. There are good and bad techs. Those with a lot of knowledge and others without. While I'm not questioning your credentials, my family is in the business as well operating a indy shop for 30 yrs specializing in MB, BMW and Audi. So who’s statement carries more weight, yours or mine? Like I said, this is my opinion based on years of experience and results of doing oil analysis.



Oil threads are like religious debates, everyone has an opinion and it isn't always backed by facts. I have run Shell Rotella T6, Mobil 1 synthetic, Pentosin Pento HP, Motul 8100 & Lubro Moly synthoil and all came back with great oil analysis results. I could have sworn someone started a thread (it was locked) about MB wheel bearing grease and arguing about only using MB-approved grease.

Our W124s are nothing special… granted we are on the forums, so we are enthusiasts who care more so about our cars than the general public. If you can, run MB-approved oil or any quality oil. Most importantly change the oil/filter regularly and stick with the appropriate oil weight for the engine/climate. It wouldn’t hurt once in a while to do an oil analysis to see the condition/wear of the engine.

Oil threads are to the point of being rediculous. Everyone is right, everyone else is wrong. Stop! I run mobile one. I like it, it's easy to get, it gives me the warm and fuzzies. I run it in my Ducati, Yamaha, Triumph (when I had them) Subaru's and now my 300d.

I will not use Motul because of how poorly it worked in my bikes and this had more to do with the transmission that piston lubrication. I had a bad experience and it's affecting my purchasing decision.

 

[Zeitgeist]

Ugh...there has to be an analog to Godwin's Law when it comes to automotive consumables threads

 

[Clarkz71]

Oil threads are to the point of being rediculous. Everyone is right, everyone else is wrong. Stop! I run mobile one. I like it, it's easy to get, it gives me the warm and fuzzies. I run it in my Ducati, Yamaha, Triumph (when I had them) Subaru's and now my 300d.

I will not use Motul because of how poorly it worked in my bikes and this had more to do with the transmission that piston lubrication. I had a bad experience and it's affecting my purchasing decision.

I agree, it's pretty bad when you get a loud mouth "claiming" to be in
the business saying MB oil specs don't matter.

I also use Mobil 1, have since the early 90's. It's also a MB spec oil.:thumbsup:

Mobil 1 motorcycle oils have unreal levels of phosphorus & zinc, really good oil.

 

[xxxxxxxtenmark262]

Like any other forum you have to read through the cloud of negativity and circular arguments to get to the ones actually posting best practices as you can always expect from Clarkz71 and the other salient opinions and experiences from indies and dealers and enthusiasts and even newbies like me.

Ahem, well.... I've owned 50+ cars and lol

Anyway, I've used lots of products over the years and don't really have any feeling one way or the other. If I could get Motul I'd try it. In the early 90s, I used to think products like Duralube or Slick50 helped but I don't have any real evidence of that other than a feeling. ...and it might have been true. Today's oils are better. Took a 94 Firebird in 97 from 101K to 180K on one oil change with Slick50; but hey, I was in college. I read recently somewhere that Walmart's Peak brand oil is really just rebranded Penzoil; off topic, I know.

And if you knew what oil I was running in the E320 you'd kill me.

 

[Clarkz71]

Ugh...there has to be an analog to Godwin's Law when it comes to automotive consumables threads

Ya think.

If anything I posted is not 100% true, please delete it.

 

[Clarkz71]

Anyway, I've used lots of products and don't really have any feeling one way or the other. If I could get Motul I'd try it.

If you knew what oil I was running in the E320 you'd slam me.

One, don't get hung up on Motul because I posted that pic.

Any MB spec oil is good, I always used Mobil 1, ran Pentosin for a while.

The independent I work at part time has Motul in stock, so I use it.

And I/we would never "slam" you for what oil you use, your car, your choice.:thumbsup:

 

[Clarkz71]

tenmark, is this it?

 

[RBYCC]

Why would one even consider diesel oil in a gas engine if the correct gas engine spec is readily available?
Is it low cost or perhaps that the diesel oil spec is over thought and diesel oil users feel they have discovered the "holy grail".

I've been using 100% synthetic oils since they were introduced in five of my six Mercs...
No problems even in a twenty five year old engine...
Use non synthetic in my 1971 280SL as the M130 doesn't have the stress of my higher performance builds.