Additives: Why?
Senior User
Joined: Dec 2010
Posts: 277
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I use a additive in my truck for one main reason. Because I know in my world there is no constant. Fuel even within spec will vary in viscosity due to small amounts of water or if a tanker truck had gas in it previously and was not emptied all the way and then filled with diesel for delivery. There are several variables and those are just a few. I think most people get caught up in the term "lubricity" when in fact its mostly the viscosity of the product or in this case fuel that keeps the internal parts of the HPFP from coming in contact with each other which intern helps to lubricate the pump. The positive displacement pump on our trucks require a certain amount of pressure to hydraulically load the internal parts and keep them from coming in contact, this is referred to as the PV Limit and is calculated using the viscosity of the fluid. So lower viscosity means the PV limit of the internal parts will be exceeded at higher rpm's. So back to why use a additive. Because it helps to maintain the correct viscosity when the fuel may not be quite to spec. The other added features are that it does help the cetane rating which makes the motor burn more efficiently.
In the days we are in where companies are trying to make cuts and save a dollar, I 'm sorry if I don't trust big oil companies to do the write thing until there caught or forced to. The greed of the human race in general dictates otherwise.
In the days we are in where companies are trying to make cuts and save a dollar, I 'm sorry if I don't trust big oil companies to do the write thing until there caught or forced to. The greed of the human race in general dictates otherwise.
I use the Ford Pm22. Why use anything else? I use 4 to 6 oz for every tank full (usually at one half tank).
ken
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Government Teat-sucker
Joined: Oct 2003
Posts: 9,748
Likes: 1
From: Virginia Beach
Good info so far. Keep it coming!
I'm now wondering if there's a place I can buy the additive besides ordering it online. So, now for the real debate question:
Which brand and why?
I like the report that DRRXR posted, it was helpful. Cost is something I also have to think about. I bought the diesel for the towing power it has, but probably wasn't totally aware of the added costs of ownership. On the plus side, I took the truck down to Corolla, NC this weekend and it performed FREAKIN' AMAZINGLY in the sand! It was fun! Can't wait to go again.
I'm now wondering if there's a place I can buy the additive besides ordering it online. So, now for the real debate question:
Which brand and why?
I like the report that DRRXR posted, it was helpful. Cost is something I also have to think about. I bought the diesel for the towing power it has, but probably wasn't totally aware of the added costs of ownership. On the plus side, I took the truck down to Corolla, NC this weekend and it performed FREAKIN' AMAZINGLY in the sand! It was fun! Can't wait to go again.
Fleet Mechanic
Joined: Feb 2010
Posts: 1,446
Likes: 28
From: Hot Springs
Rod
I use Optilube XPD, about 8 ounces every fill up which is usually at about a quarter tank or 16-18 gallons. Equates to almost 1/2 oz. per gallon which is what they recommend.
I use this because it scored second highest in the wear scar test back in 07. Until there is another test done with multiple additives that is what I'll go by. Unless of coarse a manufacture wants to do a study themselves and publish what their product can do.
I use Optilube XPD, about 8 ounces every fill up which is usually at about a quarter tank or 16-18 gallons. Equates to almost 1/2 oz. per gallon which is what they recommend.
I use this because it scored second highest in the wear scar test back in 07. Until there is another test done with multiple additives that is what I'll go by. Unless of coarse a manufacture wants to do a study themselves and publish what their product can do.
Post Fiend
Joined: Feb 2009
Posts: 8,773
Likes: 1
From: Texas Coast
Dunno about the best place but heres one place
Opti-Lube Diesel Fuel Improver (FREE UPS GROUND Shipping) 1 Quart Summer Blend - Spencer Technical Sales Inc
Opti-Lube Diesel Fuel Improver (FREE UPS GROUND Shipping) 1 Quart Summer Blend - Spencer Technical Sales Inc
Senior User
Joined: Feb 2009
Posts: 204
Likes: 0
From: Central Florida
I also use Diesel Kleen or the Ford additive if I runout of the Optilube.
Senior User
Joined: Nov 2005
Posts: 192
Likes: 1
From: Phoenix
Well, that is why I use a fuel additive. I think that it is an insurance against poor lubricity for the high pressure fuel pump. Ford does not seem to want to honor the warranty regarding the hpfp. So I use the additive just in case. It is cheap insurance.
I use the Ford Pm22. Why use anything else? I use 4 to 6 oz for every tank full (usually at one half tank).
ken
I use the Ford Pm22. Why use anything else? I use 4 to 6 oz for every tank full (usually at one half tank).
ken
I do not believe using the additive will sway Fords position on covering these pumps but it may prevent you from ever having to find out! Not having a failure in the first place will protect you from the issue with Ford!
Posting Guru
Joined: Aug 2009
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Post Fiend
Joined: Feb 2009
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From: Texas Coast
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Government Teat-sucker
Joined: Oct 2003
Posts: 9,748
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From: Virginia Beach
Can I buy this stuff over the counter? Preferred auto parts store or Ford parts counter?
How much of it (for this example, let's assume I'm using the summer blend @ $20/ qt) do I put in for each tank full? I have a 25 gallon tank that I fill at or just a little below half.
Senior User
Joined: Nov 2011
Posts: 306
Likes: 1
From: FLG AZ
I used 4oz of PM22 for each fillup. Buy the gallon can, then fill 4oz glass bottles which I store under the rear seat. In addition to the added lubricity, it's supposed to improve mileage so in my opinion, it's win win.
