Re: Lucas, Seafoam etc.

Posted by 2002sliverado on July 05, 2017 at 12:17:04 from (216.16.75.34):

In Reply to: Lucas, Seafoam etc. posted by riverslim on July 03, 2017 at 15:40:03:

I am not so positive on various additives. Perhaps some lubricity improvers in fuels, but I cannot offer much on that. I will share some experiences I have had over the years on fuels themselves. I had one of those infamous 5.7 liter GM diesel engines in a full size sedan built in the early 1980's. To have a 4 door, full size, family sedan go down the road and achieve over 30 miles per gallon was quite a feat back in the late 1980's. To keep that engine running was also a amazing feat (LOL). I put on a lot of miles driving that car. I tried various diesel fuels back then, and found the premium grade diesel fuels produced less black smoke out the tailpipe and improve fuel economy by 2 to 3 miles per gallon. That sold me on premium grade diesel fuel back then and I do everything I can to ensure I am buying premium grade diesel fuel for my truck and my farm equipment. When I had the injection pump rebuilt in that car, the man who did that work became a good friend of mine a few years prior. He told me the pump on that car was the original pump and it was apparent it had pretty much nothing but premium diesel fuel used in it. That was the other experience that sold me on premium diesel fuel. In the 1990's, after that car finally crapped out with over 200k on the odometer, I has been driving a 1986 Lincoln Town Car with the 5.0 liter fuel injected V-8. My father had that engine in a 1990 pickup truck. These two engines were the "moodiest" engines when it came to gasoline. Both would ping with E-10 gasoline, even if that E-10 was premium. We had a fuel supplier in the nearby town that did offer 91 octane premium without ethanol. Both engines ran fine, without pinging, and delivered about a 10 to 15 percent improvement in fuel economy versus any other gasoline, even other premium grades of gasoline with or without ethanol. I know, I know.......................it all comes out of the same pipeline so there should be no difference. Well, I tried a lot of different retail station's and their gasoline products, as well as different grades of their gasoline and found this one, single station provided the best gasoline for that car and my dad's truck. We had two gasoline tanks at the farm, with one for road gasoline and the other for farm gas. A friend of ours used to help in the fall and he had a Chevrolet K1500 with the 5.3 liter V-8 engine. He found the best gasoline to use in that truck was what we pumped into his tank from that barrel, which came from a local fuel supplier. He was rather insistent the engine ran smoother and obtained its best fuel economy with that gasoline. I can neither agree or dispute his claim, but he lives in a largely metropolitan area and buys fuel from a number of stations. Anyway, after my dad and I both upgraded cars and trucks, we never had a "moody" engine afterwards, but I still will try a few different gas stations and their fuels to find if there is any difference, but have not found anything significantly different since.

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