Seafoam for real?

   / Seafoam for real? #71  

ultrarunner

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SF Bay Area-Ca Olympia WA Salzburg Austria
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Cat D3, Deere 110 TLB, Kubota BX23 and L3800 and RTV900 with restored 1948 Deere M, 1949 Farmall Cub, 1953 Ford Jubliee and 1957 Ford 740 Row Crop, Craftsman Mower, Deere 350C Dozer 50 assorted vehicles from 1905 to 2006
Never had carb issues back in the day but lots of gas engines sidelined due to fuel issues.

Have not used additives long enough to give good feedback but its good to hear other's experiences.
 
   / Seafoam for real? #72  

etpm

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Jun 30, 2021
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Whidbey Island, WA
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yanmar ym2310
Ethanol in gasoline does increase the octane rating, allowing for higher compression before detonation, and higher compression allows the engine to get more energy from the fuel. But that's not the reason it is added to gasoline and even though I don't know I suspect the added octane rating is not enough of a reason for adding ethanol to gasoline. And that's not the only reason I think ethanol added to gasoline is a bad idea.
Eric
 
   / Seafoam for real? #73  

etpm

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Jun 30, 2021
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Whidbey Island, WA
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yanmar ym2310
On the subject of additives I did once use a fuel additive that really demonstrably worked. And worked fast too. Nearly 40 years ago I had a Ford Econoline van, the type with the engine between the front seats. I loved that van. Anyway, I was driving in Seattle on 520, leaving the city, and the lower radiator hose blew off. There was nowhere to pull over so I drove to the first exit, which was pretty close, pulled into the gas station there, and immediately shut off the engine. The engine stopped turning immediately too. I had the van towed home. A few days later I decided to see if it would even turn over. It did, and wanted to start, but couldn't quite. It also turned over faster than normal, meaning low compression. A couple days later I was in a NAPA auto parts store buying something for my VW Bug and related my van story to the counter man. He said it might just be coked up exhaust valves. He talked me into buying a can of "Valve Tune". The directions said to pour 1/2 can into the oil and the other 1/2 can down the carb while starting the engine. So I poured the stuff into the oil and then tried starting the engine. It would almost start. So I cranked the engine, poured a little down the carb at the same time, and the engine almost started. I let the thing sit a few minutes and tried again. This time the engine kinda started so I continued pouring the Valve Tune into the carb in a slow stream. Now the engine stayed running if I pumped the gas pedal just right. It ran real rough, like it was running on 3 cylinders. I continued pouring Valve Tune into the carb, tons of white smoke poured out the exhaust pipe, and the engine went from really rough running to smoothing out. By the end of the can the engine was running pretty well. I took the van for a drive around the block a few times and it started running well enough to risk a freeway run. I drove that van for a few more years and sold it, still running well. Since then I have not overheated an engine within an inch of its life and so have never needed Valve Tune again. But if I ever do I hope NAPA still sells the stuff!
Eric
 
   / Seafoam for real? #74  

LeeSpencer

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Joined
May 11, 2022
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Ford 961
Hi Gang! I'm new here, but the SeaFoam thread caught my eye. I've used it for years.
This Project Farm channel on youtube does really good real world testing that you might be interested.
 
 
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