DO NOT add Seafoam to the engine oil.

Not only is Seafoam way oversubscribed (but well marketed, I admit) such that its value as an oil additive is just above zero, but it is a solvent. Seafoam is primarily naptha. If you put that in your oil, it thins the oil down big time making it less effective as a lubricant. I can't concieve on one good reason to use an additive that makes the engine oil less-effective as a lubricant.

If you change your oil at the factory recommended interval or better and you've been using an oil that is at least the equivalent of the factory fill oil, you don't need any oil additive, much less one that's essentially thinner for engine oils.

That said, if you insist in abusing your engine, if you put Seafoam in the oil, once it's in there don't run the engine under load and don't run it any faster than 1000 rpm or so. If you have an oil pressure gauge you may see a noticeable decrease in oil pressure.

 

I don't see any reason for using it in the gas either. there are plenty of quality products designed as either fuel injector cleaners or as fuel stabilizers. I really don't believe in a product that is made to go into your oil or your gas. There is nothing similar in the applications so how can one product do both well or even do either well.

Nothing in my oil except oil.

Nothing in my fuel except an occasional high quality injector cleaner like Redline SL1.

 

If you're concerned about your oil just use the best you can afford. No one knows these engines better than the manufacturer so just do what they recommend... although I personally think 5k between changes is excessive and besides, more frequent changes will never harm our engine.

You may be familiar with Andy Granatelli, a race car builder and frequent competitor at the Indy 500 back in the 60s. His big sponsor was STP. He had cases of STP in the pits, He had the logo all over his cars and crew. He endorsed the product like it was a miracle. Ugly secret is that he never put a drop of in his cars.

Be like Andy... smart.

 

yea i wouldnt go much past 3000 before i change the oil......and the seafoam deal i used it in my 95 trans am and i added half the can to my oil(overfilled it abit i guess but it has a rear main leak so it didnt hurt anything) and ran the car for 200miles before i changed it......now its on 2k on the oil i changed after seafoam and the oil is still nice and amber lookin and the motor has 175k on it so i'm sold

 

Interesing that Red Line SI 1 Complete Fuel System Cleaner is mentioned. It's one of the few mass-marketed "injector cleaners" out there which is detergent-based. The vast majority of them are inferior, solvent-based products which are more popular with additive makers because the raw materials are less expensive.

The problem is that to have a solvent-based injector cleaner strong enough to do a good job of cleaning fouled injectors or gunked up intake valves, means the product will damage some of the rubber or plastic parts in the fuel system. Thus, all pour-in, solvent-based injector cleaners are only strong enough such that they won't damage any fuel system components and that has them ending up weak enough that they sometimes aren't real effective.

A detergent-based, pour-in cleaner (the two best known brands are Red Line and Chevron Techron) can be very strong but won't damage fuel system parts because it uses detergent action rather than a solvent to clean the parts.

I use Red Line SI-1, 4-oz. to every ten gallons or so of fuel on every third fill-up and I've been doing it for 15 years on all my cars. I periodically inspect parts of the fuel systems and they stay clean. As far as injectors themselves, the highest mileage vehicle on which I've regularly looked at the injectors was a Chevy Beretta I once owned. Just before I sold it with 140,000 miles, I looked at two of its six injectors and their tips were clean as a new part. Also, that car went those 140,000 miles one one set of injectors.

 

I like to use seafoam on cars w/ 100k+ miles on them and I use it through the brake booster line. It really cleans out the intake and improves performance. I suggest doing this right before changing the plugs.

 

Panel,

Seafoam isn't a "Snake Oil" product. It does a pretty darn good job of cleaning the buid-up associated with years of engine use. It cleans the valves when going through the intake and cleans oil passages and any build-up in the valve train.

I wouldn't recomend the use of Sea foam until you have an engine that is over 100K miles, and only then on an engine that has been properly maintained. I just seafomed my 94 Ford Explorer with 190K on the ticker. I noticed the mileage was down a little (only about 18 mpg hiway), and I had been getting a little pre-ignition knock when I was accelerating to pass etc. I did a pint through the intake, a pint in the oil (i drove it for about 10 miles) and then changed the oil. My mileage is back to around 21 mpg and the knock while not completely gone, is just a quick clack when I hit the throttle and then she motors on past who ever I want around.

I have used Sea Foam on other high mileage motors with similar results. FWIW, it's also a great "quick fix" if somebody has an emissions problem on a high milage engine. I know of several people who have failed the emission test, sea foamed their engine, put in a new tank of gas and then passed.

 

Sorry, I don't believe in any product that can be fed through the intake, put in the oil or put in the gas. We have 3 basically different applications from the same product??

 

Oh well, your loss.....

 

Not the way I see it