Fuel Additive(s)
Senior User
Joined: Mar 2010
Posts: 141
Likes: 0
From: Eastern Oregon
Yep pretty hard to tell the before and after and may well be a placebo effect. Not like going to the eye doctor and getting the "better out of 1 orrrrrrrrrrr 2" treatment. But it kinda like you get use a sound and the sound of my 6.0 first starting out cold was always like racking your finger nail across a chalk board it just kinda of naws on you. Back in the old days when I use to run solid lifter cams in a few of my rods they would make a lot of noise but they would also sing and you could always tell when a rocker was out of adjustment because the song would change ever so much
Senior User
Joined: Mar 2010
Posts: 141
Likes: 0
From: Eastern Oregon
I might go just a little further out on a limb here and say that when the dealership changed my oil (for the last time I might add) they put in 5 -30 oil. Without knowing they did it my mind told me there was something different about the sound of the engine. When I found out and had a little pissing match with them they gave me 15 QT's of 15-40 on the house and my ears where again happy. Again this may be a placebo effect but I pretty much think without more recording equipment that I care to waste my money on I will never know for sure but I do trust my instinct. Probably the only thing a guys can really trust.
Mountain Pass
Joined: Jan 2010
Posts: 246
Likes: 26
From: Bucks County, PA
After reading that report, maybe I'll switch from Diesel Kleen to Stanadyne. Also, should I be using the gray Diesel Kleen bottle in the warmer months, rather than continuing to use the white bottle? I'm in the Philadelphia area.
Elder User
Joined: Apr 2006
Posts: 804
Likes: 0
From: Edmonton, AB
Yes if you trust that your fuel supplier is adding the proper mix of #1 for the time of year and you fill up frequently enough to have the proper fuel in. I run the gray bottle all year and I am in a much much colder region than you.
Posting Guru
Joined: Mar 2003
Posts: 1,246
Likes: 3
in the dead of winter it gets to the -20's here in the adirondack foothills and i have had excellent results with a mix of 4 oz's grey bottle diesel service,4oz's tech- 3 ashless 2 stroke'5 gallons of undyed hess kerosene and the balance diesel.absolutely no issues in 173,000 miles.
Mountain Pass
Joined: Jan 2010
Posts: 246
Likes: 26
From: Bucks County, PA
Ok, good to know. I'll pick up the grey bottle today and begin using it in the next tank. Thanks
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Junior User
Joined: Jan 2009
Posts: 81
Likes: 0
From: Fairhope, AL
Sorry,never heard of it but I do run the Motorcraft brand cetane booster (I've been told it's repackaged stanadyne but I don't know for sure) and I can tell a diff. in the sound of my truck using it. There is alot less "clack" when running it so it must be doing something. I have never compared fuel mileage with or without it so I can't say if it helps there but I believe in it.
Can anyone substantiate the link between Stanadyne and Motorcraft brand? I have read this several times.
Junior User
Joined: Jan 2009
Posts: 81
Likes: 0
From: Fairhope, AL
Sorry,never heard of it but I do run the Motorcraft brand cetane booster (I've been told it's repackaged stanadyne but I don't know for sure) and I can tell a diff. in the sound of my truck using it. There is alot less "clack" when running it so it must be doing something. I have never compared fuel mileage with or without it so I can't say if it helps there but I believe in it.
Cross-Country
Joined: Apr 2010
Posts: 98
Likes: 0
WOW, that test result speaks volumes to me. So is ALL bio-diesel the same as the bio-diesel they use? the only problem is that you have to carry a large container to get that mix ratio. I wonder if 2 stroke synthetic is better than the Walmart stuff they used? I think I'm going to start using 2 stroke or something. Funny they never tried tranny fluid, because that's another product rumored to be a great additive for diesel. Altho my diesel mechanic buddy told me tranny fluid is heavier and tends to settle in the tank, rather than mix.
Senior User
Joined: Jun 2008
Posts: 173
Likes: 0
From: SouthEast Florida
How about STP diesel fuel treatment and injector cleaner (blue bottle)? I just dunk a bottle of that stuff in my current tank.
With my honda civic - I put a bottle of that STP gasoline fuel treatment and injector cleaner at every time I change the engine oil.
Back to the PSD. Should I switch to diesel kleen instead? Does it need diesel kleen every fill? Any further advice is appreciated.
With my honda civic - I put a bottle of that STP gasoline fuel treatment and injector cleaner at every time I change the engine oil.
Back to the PSD. Should I switch to diesel kleen instead? Does it need diesel kleen every fill? Any further advice is appreciated.
Laughing Gas
Joined: Oct 2007
Posts: 990
Likes: 1
From: North Pole Alaska
in the dead of winter it gets to the -20's here in the adirondack foothills and i have had excellent results with a mix of 4 oz's grey bottle diesel service,4oz's tech- 3 ashless 2 stroke'5 gallons of undyed hess kerosene and the balance diesel.absolutely no issues in 173,000 miles.
WOW. I have been in Alaska for 14 years and I have never done all of that nonsense.