After reading all the above, I have decided to try power service. So i went and bought a case of white bottles for $32.00. The 32 oz. bottle says it will treat 100 gallons but the guy told me to use half the bottle every fill up. Does that sound right? If I use half a bottle every fill up that case should last me for about 9500 miles. That will be about a year and a half or maybe two years. I hope it dont go bad in the bottle.

Mooseman

 

I've generally found it best to follow the directions on the label of most things rather than listen to the guy at the auto parts store.
You won't hurt anything by using a little too much except your wallet.

 

Makes good sense to me.

mooseman

 

I use a half bottle every other fill up. The anecdotal "seat of the pants test" show perhaps a small (and I mean very small) performance gain.

Anyone else notice a little less smoke at start up????

 

I'm pretty lazy about it, 1/2 bottle every fill up.
CJ

 

marks2500,
The PS label calls for 4oz @ 9 gallons of fuel. I use the grey bottle at the same ratio. When I went go the Louisville Truck show, they always recommend not using more than that. I think their r&d is worth listening to. Its their song & dance


MY WORLD

 

I usually run it on every tank...I don't get to run my truck much during the week...(darn work truck ) so I don't want my fuel settling too much...plus the extra lube don't hurt nobody!!

 

I just follow the directions..I feel my lift pump and injector pump need all the lube they can get.

 

I like gamiller31 's "gluck" method. I only use 3 "glucks" per fill up however. Best thing is it is all weather. Nothing like standing outside, wind blowing, rain and sleeting, and tring to read the side of the **bottle.