Diesel Engine Oil

[DeereMann]

buickanddeere,

I think you're spot-on with your comments. EPA has long outlived its mandate from 1970 Clean Air Act. No new government agencies are ever dissolved after fulfilling their mission - they just look for new & inappropriate missions, such as in this discussion thread. This particular issue must come to a head, however, as intra-country road transport can not be outsourced by the 1%'s, despite the lobbyist money.

Stay tuned for more from the best government that money can buy-off.

 

[tomf]

I'd just thought I would throw this tidbit in the mix for your consideration. Here is the definition of oil classification SG:

SG - 1989 Gasoline Engine Service (Obsolete) - Category SF denotes service typical of gasoline engines in passenger cars, vans, and light trucks operating under manufacturers recommended maintenance procedures. Category SG oils include the performance properties of API Service Category CC. (Certain manufacturers of gasoline engines require oils that also meet the higher diesel engine Category CD.) Oils developed for this service provide improved control of engine deposits, oil oxidation, and engine wear relative to oils developed for previous categories. These oils also provide protection against rust and corrosion. Oils meeting API Service Category SG may be used when API Engine Service Category SF, SE, SF/CC or SE/CC are recommended.

If you tractor require CC, as my B2400 does, then any engine oil you buy today will meet that standard.

 

[msparks]

I sell oils, and yes you want to use a diesel rated oil. Automotive oils have a lot of additives removed because of emission controls. Like others have said, you need more of antiwear additives because diesels work harder as well as dispersants that help keep the soot from agglomerating (sticking together)

 

[3930dave]

A lot of folks go the other way. Rotella T6 has a gasoline car following, and a cult like motorcycle (wet clutch) fan base. Decent multi-purpose synthetic, at a reasonable price.

Rgds, D.

 

[WilliamBos]

A lot of folks go the other way. Rotella T6 has a gasoline car following, and a cult like motorcycle (wet clutch) fan base. Decent multi-purpose synthetic, at a reasonable price.

Rgds, D.

Been tempted to try in my truck, but manual states no 40 weight!!

 

[SageBrush]

I run diesel rated oil in almost everything to make things simple. Only the Honda Accord gets 0w20 here, I like 5w40 or 15w40 in everything else. Every once in a while a 15w40 will go on sale. I got 3 cases of Delvac for $9 per gallon, pays to stock up! But, watch out with the new cars and trucks, most are 5w30 or 5w20 these days. For those you could run 10w30 Delvac or Rotella and get a more heavy duty oil for bearing wear. But, I doubt you would see any real benefit in a gas engine.

 

[3930dave]

Been tempted to try in my truck, but manual states no 40 weight!!

I pay attention to the factory viscosity ratings, it's there for a reason. Additives have changed in oil, for various reasons, many EPA driven - the general push is for lighter viscosities - not my natural goto, but does seem to work. I'd being doing a great deal of research (esp. on flow rates) before going to a 40W on a modern truck engine.

I'd say the best value for T6 5W40 is around a busy farm, with lots of operators - it might not be the optimum oil for everything but prevents somebody who doesn't pay attention from dumping 15W40 into a 0W20 sump.

I'm not that worried about HD diesel oil poisoning gasoline catalytics - I don't think it is the problem it is made out to be, and aftermarket cats for most applications are not expensive even if it is true.

Rgds, D.

 

[avc8130]

A lot of folks go the other way. Rotella T6 has a gasoline car following, and a cult like motorcycle (wet clutch) fan base. Decent multi-purpose synthetic, at a reasonable price.

Rgds, D.

I used to be one of those fans. I had run 5W40 Rotella T6 in all of my motorcycles...until this stupid CJ-4 certification. Now the oil SUCKS. It can't keep the transmission shifting nice on my bike past 3k miles. The oil change interval is 6k, but I can't make it there with the latest Rotella. It definitely has something to do with the break down of the oil, because with a fresh change the shifting is noticeably smooth and consistent. Around the 3k mark the shifting is horribly notchy and takes serious effort.

I want my old oil back! I don't have DPFs on any of my diesels, why can't I have the GOOD oil still?

ac

 

[WilliamBos]

I pay attention to the factory viscosity ratings, it's there for a reason. Additives have changed in oil, for various reasons, many EPA driven - the general push is for lighter viscosities - not my natural goto, but does seem to work. I'd being doing a great deal of research (esp. on flow rates) before going to a 40W on a modern truck engine.

I'd say the best value for T6 5W40 is around a busy farm, with lots of operators - it might not be the optimum oil for everything but prevents somebody who doesn't pay attention from dumping 15W40 into a 0W20 sump.

I'm not that worried about HD diesel oil poisoning gasoline catalytics - I don't think it is the problem it is made out to be, and aftermarket cats for most applications are not expensive even if it is true.

Rgds, D.

Aftermarket cats are worthless garbage, especially with bi annual e testing. Staying OEM.. BTDT!!
As for oil, I stick with what HM recommends for my truck, 5w30, or 10w30 in warmer weather.

 

[avc8130]

I'm not that worried about HD diesel oil poisoning gasoline catalytics - I don't think it is the problem it is made out to be, and aftermarket cats for most applications are not expensive even if it is true.

Rgds, D.

This is no longer a worry. Since CI-4, diesel oils have been designed to be compatible with catalytic converters. CJ-4 is designed to be compatible with DPF.

ac