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i use holmes additive in my 2001 dmax, at the recommendation of the service mgr where i have it serviced...


my friend just adopted a '95 6.5L doolie with 121k miles...she asked me if she shud use an addtive also, so i thot i'd get an opinion here as to which is recommended, if any...


also, we can't find what kind of tranny she has...we looked all over the owner's manual, but cudn't find a reference...it's an automatic...


thanks...





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Today I've orderd a kit you need when you want to change the transmission oil. I was asked which tranny I have, and I was told that the tranny should be either 4L80E or 4L60E: The 4L80E should have a transmission pan that is rounded at the rear side, and the edges at the bottom of the pan are rounded, too. The 4L60E should have a pan with sharp edges. I've got the rounded one; you can easily see what's there when crawling under the truck.

You may find info on the tranny and on other things on the truck by looking up the RPO codes you can find on a sticker in the glove box --- do a search here for RPO codes.


Using additives depends on the fuel you're getting. I wouldn't recommend using them, but diesel fuel here in Europe seems to be a lot different from what you have in the US, so it might be worthwhile.

A previous owner of my truck had it run on heating oil which is supposed not to have the additives they usually put into the fuel (i. e. none at all), but I don't know how much heating oil they ran through her. --- I've had a tank full of fuel that was labled to have no additives on a holiday trip in Portugal, and she smoked it like any other diesel I give her. MOTT I'm getting Dutch fuel (it's cheaper than here), much of it from the pumps where the big trucks take it from, but it's never been an issue anywhere, except that I always have to take care not to accidentially get Biodiesel or the like. Do _not_ use Biodiesel, that stuff can damage the gaskets and the IP!

It's important _not_ to have water or debris in the fuel, imho much more than having additives.


Many years ago, once I put some additive into the fuel on a Nissan diesel engine, but the additive didn't seem to do anything.
Edited by: 0lee

since its a 3500, i would have to bet that it is a 4l80e.


several companies make fuel additives. the only one that is recommended and accepted by gm is the additives from stanadyne. their performance formula is a nice package. i currently am trying schaeffer's soyshield. i have used powerservice in the past and couldn't really tell the difference.

Steiner.. please let me know how soyshied works out for you. hve you tried our Diesel treat 2000?

When I asked GM about the tranny's, I was told ALL 6.5L with 4 spd autos were the 4L80E and they never put the 4L60E behind a diesel. Unless someone tells me different, that's what I have been told.

havent tried the diesel treat yet. will probably try it this winter for the antigel.

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sales rep...can u tell me more about diesel treat?


thanks....


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Diesel Treat 2000 simply stated makes #2 fuel premium by all standards.According to the NCWM Premium Parameters to be called a Premium you must meet (2) of the Following according to ASTM testing measures and other crieria.


Btu Content


Cetane


Detergency


Stability


Low Temperature Operability


Diesel Treat 2000 meets all FIVE (5). This product along with our Artic Flow Plus are the primary reasons we have become the 2nd largest diesel treat additive Co. in the Nation. For more detailed Tech Data go to www.schaefferoil.com (http://www.schaefferoil.com) product 137nd.Edited by: salesrep

I use power service, get almost 1 mile to the gallon more and I can tell the difference when pulling my Travel Trailer.

hotrod which ps product are you using?

Salesrep, how does your additive stack up against Stanadyne's Performance Formula? Hard to beat an additive made by the same people who make the pumps I would think. They also have clearly illustrated comparison results from several other additives.


GM, Ford, John Deere, Navistar and Cummins approved it.


http://www.stanadyne.com/new/ppt/showfile.asp?id=1156

TDG, Hard to take advice from a company that had so many pump issue's on a design.
I know their performance formula is fine but your reason is not a good one.

Fair enough, but the majority of the problems are with the electronics, the fuel additive is to treat the mechanical parts of the system, Head&amp;Rotor, Advance Piston, Transfer Pump and Fuel Solenoid in particular.Edited by: Texas Diesel Guy

tex diesel guy..


I am not sure how we compare exactly. I noticed their comparitive study is from 1996 and test just three catagories and lubricity being the only one of the three not directed at cold weather. Nothing on r&amp;o,a&amp;w copper corrosion, Cummins L-10 detergency. That said gm is not going to recommend a product that is not going to do a pretty good job.


Our Diesel treat 200 137nd is a little different animal in that it changes #2 into premium. This product is sold in bulk to fuel suppliers, Jobbers and truck stops to create premium and is a compound blend with detergent,stability improvers,solvent,a&amp;o, Biocide, corrosion inhibitors and lubricity.Though I am sure standadyne is a great product, I do not think it stacks up pound for pound.

Is it really that different? Perf Formula contains not only Lubricity and Cetane Improvers, but a Deposit Modifier, Detergent, Corrosion Inhibitor, Water Demulsifier, Anti-Oxidant, as well as Wax Dispersant and Modifier.


http://www.stanadyne.com/new/ppt/showfile.asp?id=501


From what I've read about it, I would rate Stanadyne's as first, and yall's stuff sounds just as good, Racor being Close second, but I wouldn't reccommend any one elses, Power Service, STP and the others I've seen are far inferior.Edited by: Texas Diesel Guy

tex, the standayne sheet reads real well. I am sure it is a good product. I just know Schaeffer's and the quality we manufacture in all our products. We have been doing business for a LONG time. If we print it you can be sure that it is true.


It would be interesting to do a test ing procedures between the two.


ps. Anyone know who manufactures standadyne addititves?Edited by: salesrep

I could be wrong, but when I took the tour there, I'm pretty sure the rep said they made their additives and filters in house. I did see their test facilities.


As I stated, your product sounds just as good, and I've always been a fan of Schaffers products, at my old shop, the only oil we had on the premises was Schaeffers and its all we used in all our family vehicles/tractors.Edited by: Texas Diesel Guy

Sales rep,


I know someone here in Texas looking for a prepackaged diesel additive that's non-petrolem based to resale. ie biodiesel, agtane


Does your additive qualify or can you recommend one?

Absolutely. Soyshield or b-2 soyshield Our soyshield is soy based premium diesel additive that turns #2 into premium. we work with several bio boards and this product has been very well received. Could be a great fit. product 139 www.schaefferoil.com (http://www.schaefferoil.com) please pm or have him email me if you want to find out more. Edited by: salesrep

filled up friday and got 17.9 mpg with the soyshield. that is the highest i have gotten with my truck yet. i have a little bit more to use and then i think i will get some schaeffers diesel treat #137-ND or #137A-ND. will probably go with the summer forumula since it isnt winter yet.

SaleRep, I use the PS in the white bottle (anti-gelling) that has the cetane boost added. Its sold at all the Walmarts around here and the truck stops. My neighbor is a 20+ year diesel mechanic and recommended it. I've been very happy with it over the last 4 years.

THe ps anti-gel does its job else it wouldn't stay around for as long as it has. And it is handy at the retailers.

Salesrep


Just started to use the SoyShield in fact this is the 1st gallon I bought, I am able to buy it at a local auto parts store. So the jury is still out I was an avid Howle's user ever since I have owned diesel. I know that SoyShield is more expensive but my truck don't seem to smoke as much and seem to have a little more power but I don't see the increase in fuel mileage. I thought about using their engine oil but a $4.50 a quart I can buy Mobil 1 for that price. So it will take me a little convincing to change oils. But as long as that auto parts store continues to carry SoyShield I will use it (I believe in supporting our farmers anyway I can).





Rick

Glad to hear it 69 .. Where is Iuka?

Salesrep


It is NE of Mt Vernon Il about 20 miles. Got relatives that live in Chenoa Il. I was born in Bloomington but raised down here and in Gridley Il





Rick

radrecon69: thank you for supporting the farming community


i just bought 2 more bottles of soyshield tonight.


which oil is $4.50? the best schaeffers oil is the synthetic blend supreme 7000 15w40, product number #700. i get it in ohio for $2.72 a quart or $10.90 a gallon. it is a little bit more than rotella, but not as bad as amsoil and i think it is a better oil than amsoil.

69 We have a rep in mt vernon that would be happy to sell you at wholesale ( by the case). I' ll pm you with the info.

Steiner


The oil I am referring to is the synthetic blend now that price is at a auto parts store so i would they are taking a big mark up for that oil. So you think that is better than Amsoil? I started using Rotella Synthetic 5W40 in my rigs and so far I like it but I am also a guy that can change loyalties real fast when it comes to my trucks. So maybe I will try the supreme 700 at next oil change.





Rick





Edited by: radrecon69