I use Hot Shot Secret, and Amsoil all in one when it's really cold.

 

All additives do is drive up your cost per mile. They are neither required nor provide any benefit other than feel good. If you wanna do something good for your engine, change the fuel filters every 3rd oil change, clean fuel filters are the number one thing that helps engines and your fuel system. I have over 400 K miles driving on four different diesel vehicles and not one fuel or engine related issue using no additives…other than anti gel….

 

Well, I was in the wholesale fuel, lubricant, and propane business for 29 years. Diesel fuels have gotten progressively worse for the past 20 years, and the current ULSD's are the worst yet. Cetane varies batch to batch, lubricity is far reduced from he LSD days, and overall quality is adequate at best. Many refineries add a lubricity additive back into the fuel post refining just to help with lubricity problems created by ULSD fuels. Use what you want, I could care less, but to pretend diesel fuels nowadays are as good as yesteryear, well, you're kidding yourself

 

HotShot.. from local TSC. I did a little research. I know this has been beaten to death, but GM recommends an additive unless you are privy to top-tier diesel. And most of us are not.

 

Optilube in my L5P, is it needed?

 

Optilube in my L5P, is it needed?

yes it is.

 

I've used Optilube for years in my LBZ. I still have a bunch and am using it in the LM2. If nothing else it should help burn cleaner and reduce the load on the emissions system.

 

Opti-Lube here with Cetane boost every tank.

 

I used Hot Shots Every Day treatment starting a month or two after we bought our LM2 last spring. It definitely sounded quieter even though it was a new truck.

I switched to OptiLube red when it got cold, even though in SC it doesn’t get SUPER cold, I wanted something that had an antigel just in case. I’m just a sample size of 1, but I feel like my truck “preferred” the Hot Shots. It seems to run smoother and just a hair better compared to the OL red. Plus HS is way easier to find… OL is internet only for me, plus shipping.

I bought the OL summer blend that I’ll start using here shortly and see how that goes. Either way, the diesel supplement recommends using an additive. I don’t buy the “but you’re wasting money every fill up” argument about additives. Maybe I AM wasting money, who knows. But a quart bottle of OL costs me $17 and will last months… I’ve spent more money on worse things, believe me. And if spending literally tens of pennies per fill-up by using an additive hurts me financially, I shouldn’t be driving a 2022 pickup in the first place.

 

Use to use a litre of 2 stroke oil per tank years ago ,

 

Pretty certain there was no SCR or DPF in the system when you did that. Not recommended at all on newer emissions compliant vehicles from what I’ve read.
Apparently, the best additive for lubricity and cleanliness of the fuel system is 2-5% biodiesel mix with regular diesel…

 

Absolutely, BioDiesel is like Ex Lax for your fuel system. It's 5% where we are.

And if you notice the Diesel supplement recommends AC Delco products, not just a "Fuel Supplement." I'm sure some goofy dealer would blame whatever you are using for some issue, saying "But that product is not suitable for our emissions or fuel systems" if they could bend it that way.....

I used to dump Marvel Mystery Oil in my 04 Cummins early on till I basically figured out it didn't do anything for me...19 years later and mega miles on it and it uses no oil and runs like showroom.

 

We are at 4% BD blend in our area.

 

1 oz of Hot Shots EDT in every tank. The $1 per tank that it costs doesn't bother me. Kwik Trip premium diesel and 5-20% bio-blend in every fourth tank except during winter.

 

Why is diesel more expensive then highly refined premium fuel ? and still need additives .

 

Just asking ,why could u not add a bit of 2 stroke oil to lube injectors still ,don't jump on me lol trying to be educated

 

because the new fuel system is very high pressure not like older diesels where you could pretty much put rat piss in the tank and it would work fine.

stuff like atf gasoline two stroke oil etc will wreck the high pressure pump and injectors

filtration and running specific grade of diesel is very important if you want your truck to last

 

Great thank u

 

Opti-lube summer and winter blends. Diesel around here sucks. Much better further south but that is based on fuel mileage I’ve experienced over the last 5 years.

 

I've been an amsoil guy for a while and "used" their additives... Until someone recommended OptiLube XL. I have no idea what this stuff does but there is an audible difference when you put it in your tank how smooth your motor runs. Cetane helps too but man Optilube XL has been the only company I can actually hear outperform Amsoils in how much difference it smooths it out. I thought I was crazy so I went one tank with nothing and you could hear it "clattering" more. When Empty I put the Optilube in, filled it up and after 15 miles or so I was back home and you just hear the motor running smoother. As many have said I have no clue if these additives help, but that one certainly is doing something!

 

How many ounces per tank do u use of Optilube thanks

 

I use their 4 oz bottles and I use one per tank.

 

0

 

How about NONE, the addittives are basically expensive snake oil. I have seen test data on them and it basically does nothing, certainly no where near what they say and nothing good for the engine. Buy good diesel from a place that turns it over and IMHO that is the best thing you can do.

 

Read post #4, then guess again.

 

If you have the cp4 you should use a pump lubricant and install a good lift pump , or convert to the cp3 if your adding a tune. Just my opinion. RT 550hp lml.

 

Diesel fuel also had to meet very strict guidelines and the only signifcant change has been ULSD which happened in 2006. Is there bad diesel out there, sure, but diesel that meets the ULSD ISO standard is just as good today as it was in 2006.

 

Diesel fuel also had to meet very strict guidelines and the only signifcant change has been ULSD which happened in 2006. Is there bad diesel out there, sure, but diesel that meets the ULSD ISO standard is just as good today as it was in 2006.
Also be aware that not using ULSD in a DEF equipped vehicles will likely poison the catalyst like leaded fuel does with cats.

 

If additives are snakeoil, why does Cummins officially recommend them? https://www.cummins.com/news/releas...7/05/10/cummins-inc-officially-recommends-power-service-diesel-kleen-cetane-and

 

I never said it was harmful just not a good use of $$. Cummins certainly has a lot of loose for reccomending bad products, that being said they are also in the business of making money and this stuff is wicked profitable. My guess is Cummins gets a commission on everything that is sold which justifies the testing and reccomendation.
Boosted cetane is one of the most widely misunderstood measureables, it has no relation to octane in any way. It is a measure of the fuels speed of combustion, not resistance to combustion or more performance. Diesel fuel has to meet a min cetane of 47, does a higher cetane make for a better fuel, well it depends on the engine but generally no. Just like the oil companies heavily advertise there very expensive high octane fuels that in most cases make engines less efficient the same is generally true for higher cetane in engines that dont need it.

 

Minimum cetane is 40. That's also more appropriate for heavy trucks that like 1500 rpm and are out of breath at 2k. The smaller diesel market where the motors twist higher are a different story. Higher cetane and a faster burn at those rpms is worthwhile. Better quality ignition is either more power or greater efficiency. That's a win either way.

 

But if it does boost, the under minimum cetane rating some diesel across the country has, it will help. Europes minimum cetane is 51, North America is only 40.

Octane And Cetane Ratings - Your Guide To Diesel Fuel And Gasoline's Specs

Winter is upon us, and many of you are probably seeing commercials of "winter fuel," and probably wondering what that it. We explain octane and cetane ratings

www.autoevolution.com

Absolutely, and undeniably true.