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| | | Forums66 Topics128,047 Posts1,055,662 Members48,426 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jan 2020 Posts: 620 'Bolter | | 'Bolter Joined: Jan 2020 Posts: 620 | A few weeks ago ya'll read me moaning and groaning about leaving regular gas to long in my 54' 3100. Never again only white gas from now on. In order to avoid rebuilding the model "B" which only has 1 hour on it. I used Sea Foam at my NAPA dealers suggestion. I didn't think I used too much but the 235 chocked out and will not start. AC R45 plugs looked like fuzzy charcoal. I wire brushed and used cleaner deep down. If this does not work I have access to spark plug sand blaster. Anyone have experience with Sea Foam? Will not start engine until I hear from a Bolter. Doc
Currently making 1954 3100 better than new and Genetics
| | | | | Joined: May 2015 Posts: 11,031 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,031 | In my experience, Sea Foam is more suited to diesel engines. I've used it in mine a time or two. Sta-Bil is probably better for gasoline (use that in my boat). Did you put the SeaFoam in the tank or fill the carb with it? If you can get the engine started (wire the choke open and crank with the throttle full open), you should be fine. You'll probably rid the neighborhood of mosquitoes for a little while. 
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: May 2001 Posts: 1,904 'Bolter | | 'Bolter Joined: May 2001 Posts: 1,904 | I have used Sea Foam before in the gas tank of my '48 and vintage Mercury outboards. I also put too much in the gas tank of a lawn mower and couldn't start it. I use Stabil over the winter in my boats and lawn mowers.
My favorite to use periodically in my '48 and wife's car is Chevron Techron. It's advertised as fuel injector cleaner but I think it must be good for carbs too. It's available at Costco so that's convenient. Chevron gasoline once had a good reputation because of the Techron in it. 1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
| | | | | Joined: Mar 2014 Posts: 4,481 Moderator, Electrical Bay | | Moderator, Electrical Bay Joined: Mar 2014 Posts: 4,481 | Some people love Sea Foam and other people have different ideas. I think it is about like P (T) B(arnum) Blaster, personally. Lot of sizzle and almost no steak.
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
| | | | | Joined: Sep 2010 Posts: 2,307 'Bolter | | 'Bolter Joined: Sep 2010 Posts: 2,307 | I’ve used sea foam just a little here and there as well as Marvell mystery oil . | | | | | Joined: Dec 2001 Posts: 14,522 Moderator: Welcome Centre, Southern Bolters, Legion Hall | | Moderator: Welcome Centre, Southern Bolters, Legion Hall Joined: Dec 2001 Posts: 14,522 | I'm with Wally, I like the Chevron Techron. | | | | | Joined: Jan 2016 Posts: 631 'Bolter | | 'Bolter Joined: Jan 2016 Posts: 631 | Some people love Sea Foam and other people have different ideas. I think it is about like P (T) B(arnum) Blaster, personally. Lot of sizzle and almost no steak. Agree ^^^^^^^^^. As per the MSDS SEAFOAM is : Naphtha Pale oil IPA ( alcohol) So many of us use none ethanol fuel, so adding any alcohol seems anti productive ? Some add SEAFOAM to the crankcase.......Two of those three ingredients are NOT a agood thing to mix with the oil. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | IPA ( alcohol) Isopropyl Alcohol (IPA) | | | | | Joined: Jan 2003 Posts: 354 'Bolter | | 'Bolter Joined: Jan 2003 Posts: 354 | I don't have an opinion about Sea Foam but MSDS isn't required to list all the ingredients. Some do some don't.
Harold Wilson 41 Chevy 3/4 Ton
| | | | | Joined: Jan 2020 Posts: 24 'Bolter | | 'Bolter Joined: Jan 2020 Posts: 24 | Chevron Techron is the only product I've tried. Had no problems whatsoever. | | | | | Joined: Jan 2020 Posts: 620 'Bolter | | 'Bolter Joined: Jan 2020 Posts: 620 | Thank you all from klhasen on down. Techron is a word I have not heard in years. You folks are the best. Tonight at about 11:00 if temp is below 89 I will do what klhasen advises. Should I crank it for about 30 seconds with the plugs out? Doc.
Currently making 1954 3100 better than new and Genetics
| | | | | Joined: Oct 2014 Posts: 140 'Bolter | | 'Bolter Joined: Oct 2014 Posts: 140 | I've used Sea Foam for for a long time and if used correctly it is a great product. | | |
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