The local farm supply sells a high volume of diesel that happens to be a premium blend that they claim needs no additives (http://www.premiumdiesel.com/KPFGoldDiesel.htm). They only sell the one type of diesel, and its at a price thats lower than normal diesel at other local stations. I've been using Primrose and am wondering if I still need to use it when running this blend. Also, is there any harm adding Primrose on top of the additives they already add to the fuel? Edited by: Roegs

C'mon...somebody must have an opinion on using additives with premium blends. http://www.dieselplace.com/forum/smileys/Cry.gif

Well, the lubricity looks good to me, so I think the only thing it needs is a small cetane boost since they claim 42-46 which to me is not quite high enough if the fuel is at the lower end of that spread.

we just returned from a 10,000+ mile trip cross country while towing a very heavy 33' camper and hit many stations that posted a minimum 40 cetane rating (at least that is what I assumed the 40 stood for), only saw a couple of pumps with a 42 rating .... I do add FPPF Total Power at every fill and with 71,000+ on the truck, have never burned a tank of fuel that I could tell impacted the way the truck runs (positively or negatively) ... do carry a bottle of FPPF cetane booster in the truck but have never been able to tell any difference when using it or not


Jim

I have used both Primrose and Stanadyne since about 5k, and now have 33k. I have run a few tanks of diesel before switching from one additive to the other. The only difference I notice is the amount of smoke and color. The Primrose seem to put out a darker exhaust than the Stanadyne. I change the filter regular 12-15k, and am about to put on the nicktane that I bought over the past winter. I don't see a difference using additives, but like life insurance I am investing in it and will continue to use it.

Probably not needed. I would run some Primrose every 3rd tank or so. Right now all I am running is Soy Shield for added lubricity. I had been running FPPF, but the station I fuel at now has filters on the pumps and they move a lot of fuel, so I am not worried. My OEM filter was clean as a whistle, Cat must be doing it's job very well. Will change the Cat out when it gets 20K on it, which is very soon.

JEBar:

FPPF Total Power raises cetane as well, though I am not sure by how much. So those 40 cetane fuel loads you get are being raised with the addition of FPPF TP.

I am going to start running Stanadyne every fill up. Should help some. I figure a little is better than nothing. http://www.dieselplace.com/forum/smileys/HiHi.gif

Thanks for all the replies on this. From an additive perspective, if a little is good, can I assume more is better. I'm assuming that the premium diesel (which claims I need no additives) already has some of the qualities that Primrose provides me. For example, the premium has additional lubricity. If I continue to use Primorse with the premium diesel, is there a point where the fuel would have too much lubricity?

I used FPPF every tank for a year.Could not see a increase in power or mileage.The reason I quit using it was the truck started running poorly for several tanks of fuel.Seemed to runbetter without it.Then I decided to give the Primrose a try and ran that for three months with no increase in power or mileage.Started using Cenex Premium diesel fuel which has a demulsifier in it and quit using the Primrose which has a emulsifier in it.

Up here Sunoco has Gold Diesel. I think its claim to fame as a premium fuel is a higher cetane rating. Don't remember if it has any better lubricity to it.
IF this is the case, additive for lubricity would probally be recommended.

A product called PowerService supplement and cetane boost is sold where I've been fueling. See guys with big trucks dumping it in when they're fueling; talked to one and he says he uses a qt to 100 gals every time he fuels. Says his motor runs better. Anybody hear of this or use it? Thanks.

Black Max;I used to use it. There is a website under Bennetts. I used to have it bookmarked. I ran it for a while. Switched back to Standyne Performance Formula.
I have a bunch of fuel milage numbers to convert. Will compare fuel milages between the two.
I used Power Service Diesel Kleen. Cheaper than Stanadyne, and more volume. Don't really know if it did any good.

I'm thinking that alot of this stuff is "feel good", but it certainly can't hurt. I've decided that mine runs a little better with the PowerService, and my actual mileage empty is usually around 20 mpg....without my foot "in it" all the time. Am curious how much it'll drop when I start towing the 5th wheel.

Black Max


I started using PowerService around 10K miles, now have just over 14K. It is the only thing I found at Walley World I could get easy access too. My last fillup I finally broke the 20MPG mark. Did PowerService do it, or have I just got bored chewing up 'ricers' and been staying out of the throttle more? Probably a little of both. I have noticed the diesel clatter seems a little quieter since using it every tank. I also have noticed that diesel or premium diesel hasn't seemed to make that much difference in MPG either way. I just put the P/S in all tanks.

http://www.dieselplace.com/forum/smileys/Clown.gifMike_in_Wisc, Did you find the "party" yet? Will be heading your way sometime in August dragging a trailer with the rider on it. The grass isn't getting cut enough, and we have to have a path to the cabin for hunting this fall!

Just my luck, a day late a dollar short, the mower is outa gas, and the 'pardee' is over. Man, that's scarey, I'm even starting to spell it the way they dohttp://www.dieselplace.com/forum/smileys/Confused.gif