[Tom Vaught]

SN has been gone for quite a few years which is why I stocked up on that oil YEARS AGO.

Tom V.

[Steve C.]

Is Diesel Motor Oil the Right Choice for a Gasoline Engine?

Many enthusiasts look to diesel motor oil as a high-zinc alternative, but is it the best choice? A certified lubrication expert explains the difference.

https://www.motortrend.com/how-to/di...soline-engine/


.

[4zpeed]

" When choosing an oil, don't start with the oil. Instead, start by defining the application—gas or diesel, boosted or NA, drag race or street."
"The actual brand of oil is the last choice. Let the application dictate the chemistry and then decide which brand delivers that chemistry."

Never dreamed of using Diesel Oil. Very informative article though, especially on primary vs secondary ZDDP. Nice post Steve, thanks!


Frank

[78w72]

this was posted recently with 5 pages of discussion...

https://forums.maxperformanceinc.com...d.php?t=862015

[sdbob]

Thanks Steve. I watched Tony's video on cams lifters and talking about oil and Ellisons videos on cams lifters and speaking a little about oils. Now I got a headache! No, just keep informed.

[Formulajones]

Great link Steve, and reiterates some of what was talked about in the thread that 78W72 linked starting around post 62.

[grandam1979]

My guess is once he reads that 5 pages he’s going to be more uncertain than ever. Half hate using Diesel oil it’s not correct half have been using it for years and it’s fine. The question might make a good poll? Personally I have used diesel oil many times with no issues even in my high mile trucks during the summer.

[Formulajones]

The catch is "WHICH" diesel oil. They are all not created equal as we discussed in that other thread.

Some claim to be rated for both gas and diesel, and others don't have the correct amount of ZDDP or anti foaming agents making them a bad choice for a gas engine.

Foaming and engine rpm limited being the big eye catcher for me.

Gotta pay attention to what is poured in.

[72projectbird]

I've run various diesel oils for years without issue, and will continue to do so.

[Tom Vaught]

I purchased my high ZDDP years ago at the recommendation of the BP Oil Expert,
I am good to go.

Tom V.

[Tom Vaught]

Originally Posted by Steve C.

Is Diesel Motor Oil the Right Choice for a Gasoline Engine?

Many enthusiasts look to diesel motor oil as a high-zinc alternative, but is it the best choice? A certified lubrication expert explains the difference.

https://www.motortrend.com/how-to/di...soline-engine/

.

Who is the "certified lubrication expert" Name and who does/did he work for, Steve?? Thank You.

Tom V.

[Steve C.]

The article was written by Lake Speed Jr.

One of the world’s foremost Tribologists (the study of Friction, Wear and Lubrication), Lake Speed Jr. holds multiple certifications from the Society of Tribologists & Lubrication Engineers. Lake also formulated the lubricants used by Joe Gibbs Racing (and other professional teams) to win the Daytona 500 and numerous NASCAR championships.

Also the VP of Sales and Marketing for Total Seal Piston Rings.



.

[tom s]

There is a world of diff on dsl fuel these days compared with yester years.In CA now almost impossible to find dsl that is not some percentage of BIO fuel.My son was in the Sierras a couple weeks ago and with the cold weather his fuel gelled.Im told pure old fashion dsl does not gel?His car does not have a block heater so he had to buy a space heater to get it to so he could go and buy a anti gel to put in the tank.SOooo maybe the newer dsl oils have a diff blend to cope with the more modern but inferior fuel?Food for thought or just forget it!Tom

[Formulajones]

Originally Posted by Steve C.

The article was written by Lake Speed Jr.

One of the world’s foremost Tribologists (the study of Friction, Wear and Lubrication), Lake Speed Jr. holds multiple certifications from the Society of Tribologists & Lubrication Engineers. Lake also formulated the lubricants used by Joe Gibbs Racing (and other professional teams) to win the Daytona 500 and numerous NASCAR championships.

Also the VP of Sales and Marketing for Total Seal Piston Rings.



.

I've read some of his articles on oil and piston rings. He gets pretty technical about bore finishes and ring design that is pretty interesting.

[Steve C.]

Total seal tech articles

https://www.totalseal.com/tech-articles

Oil article with Lake Speed JR

https://themotorhood.com/themotorhoo...breaks-it-down



.

[Jay S]

The things that have changed with diesel fuel is EPA has forced the removal of the sulfur, fuel has to be friendly to emission devices(which has also driven oil reformulations)) and modern engines have filtration systems are much finer now on the electronic direct injection systems. In really cold temps it is more difficult to push the diesel thru the filter, you must run either number 1 diesel or a blend of number 1 and 2, or anti gel additive. When bio diesel came out there was a lot of trouble with pushing it thru the filters on modern direct injection electronic systems, and it made them plug, that was sorted out quite a few years ago. The bio fuels are still a little worse in cold weather though. Every Diesel engine I have every been around can gel in cold weather on number 2 summer diesel for as long as I have been around diesels.

[The Champ]

Originally Posted by Steve C.

The article was written by Lake Speed Jr.

One of the world’s foremost Tribologists (the study of Friction, Wear and Lubrication), Lake Speed Jr. holds multiple certifications from the Society of Tribologists & Lubrication Engineers. Lake also formulated the lubricants used by Joe Gibbs Racing (and other professional teams) to win the Daytona 500 and numerous NASCAR championships.

Also the VP of Sales and Marketing for Total Seal Piston Rings.



.

Tom V didn't consider Lake Speed Jr. an "expert" in the thread I started (previously linked in this thread). I doubt he will change his mind now.

His comment on my thread:

Always smile at these Hot Rod car type Magazine experts opinions.

15 years isn't chit in doing the job in oil research.

I was told 20 years ago by the BP Oil company (Oil EXPERT) who supported us at
Ford Research that the 15/40 oils would be just fine with my GTO when running a flat tappet camshaft. I haven't had one issue in 20 years of using the oil. 1350 PPM of Zinc.

So do I believe a Magazine Writer who writes for a car magazine or a expert with 30+
years of oil knowledge at the times whose company actually make oil products.

I tried to explain Lake wasn't a "Hot Rod car type magazine expert", but it seemed to fall on deaf ears.

[Steve C.]

He is a certified lubrication specialist working for Joe Gibbs Driven motor oils.

Interesting tid bit about his NASCAR involvement...

https://www.enginelabs.com/features/...-nascar-rules/

.

[Formulajones]

He's more so an expert on oils than anyone I'd even consider on this forum.

Are we really going to take the word of classic car people that don't even drive 500 miles a year and call that a success story?? Hell most of them won't even do an oil analysis to even know what's going on.

Just sayin'

[Sirrotica]

Originally Posted by Jay S

The things that have changed with diesel fuel is EPA has forced the removal of the sulfur, fuel has to be friendly to emission devices(which has also driven oil reformulations)) and modern engines have filtration systems are much finer now on the electronic direct injection systems. In really cold temps it is more difficult to push the diesel thru the filter, you must run either number 1 diesel or a blend of number 1 and 2, or anti gel additive. When bio diesel came out there was a lot of trouble with pushing it thru the filters on modern direct injection electronic systems, and it made them plug, that was sorted out quite a few years ago. The bio fuels are still a little worse in cold weather though. Every Diesel engine I have every been around can gel in cold weather on number 2 summer diesel for as long as I have been around diesels.

K1 is what you need as an additive to keep diesel from gelling. Having lived around the Great Lakes the majority of my life, as well as owned, and worked on a bunch of diesel cars and trucks since the 1980s, adding K1 to any diesel fuel will keep it from gelling. When I drove fuel tanker, to winterize diesel at the loading racks consisted of adding K1 at about a 30% ratio to regular diesel fuel as it was loaded from the storage tanks to the tanker. Or some fuel retailers had additives that that they add to their underground tanks to treat the fuel, that's how you prevent it from gelling.

After it gels, replacing fuel filters, physically adding heat to the fuel, and anti gel fuel additives are how you get a diesel restarted that has gelled the fuel. At 10 degrees F is when you have trouble with #2 fuel clouding, and forming the solid paraffin flakes, that clog the filters. Anticipation, and pretreating the fuel is the best preventative measure, after it shuts the engine down is when it's a pain to get the fuel flowing again.

Some modern diesels also have electric fuel heaters inline in the systems activated by a thermostatic switch to keep fuel from gelling. GM started using fuel heaters in their 5.7 diesel cars about 5 years after introduction of their re-engineering the olds 350 into a diesel engine. My 81 Bonneville didn't have fuel heaters, but a customers 82 Cutlass did have heaters for the fuel.

No doubt that the ULSD (ultra low sulfur diesel), is a much different fuel than it's predecessor was. Because the sulfur provided lubrication to the injection pumps, the new fuel is hard on injection pumps, causing premature wear internally to the pumps designed for the older formulation fuel. Adding 2 cycle oil to the fuel, helps head off wearing out injection pumps when using ULSD.