General TechHave a question that is not covered by one of the other categories? This is the forum for all other items not specifically covered in other categories.
Hello, all. We have a bunch of high mileage minivans (all are over 250,000) and I have been pondering the use of Seafoam in these engines. I am comfortable with running it through the intake and in the fuel tank so lets not discuss that, but what is the wisdom of using it in the crankcase? The underside of the oil cap has lots of hard, crusty gunk on it and the valve train has alot of hard, brown gunk on it.
I would like to hear about the pros and cons of using Seafoam in the crankcase to clean this stuff. Would it clean that stuff out? Is it worth cleaning that stuff out? Would it clean out that stuff too well and cause troubles with plugging passages or sticking a relief valve?
Thanks for any thoughts about the Seafoam in the crankcase.
I am going back over some of my subscriptions and I found that no one had an answer for this. Does that mean no has any experience? I would love to hear from others.
Never used it but know of some who have used similar products over here . Split 50/50 .Some says it's great , others , dont let it near your engine unless as a last resort .Why not try it in one vehicle and see what results you get first hand ?
It does what it says, but at that many miles, you might want to wait until your just about ready for an oil and plug change. As far as recommendation for use, ultimately, using a quality oil and filter as well as keeping up with maintenance of the air intake and throttle body minimizes, if not eliminates the need for such a product. Also, the older the engine, the more likely you can have fouling or develop leaks. I've used it, noticed a slight change, but AI had all ready disassembled my throttle body and cleaned it.
It does what it says, but at that many miles, you might want to wait until your just about ready for an oil and plug change. As far as recommendation for use, ultimately, using a quality oil and filter as well as keeping up with maintenance of the air intake and throttle body minimizes, if not eliminates the need for such a product. Also, the older the engine, the more likely you can have fouling or develop leaks. I've used it, noticed a slight change, but AI had all ready disassembled my throttle body and cleaned it.
Thanks, Skinner. I was already cautious about it in a high mileage engine so it's good to hear that my fears aren't unfounded.
What do you mean by Maintenance of the air intake and throttle body?
Why not try it in one vehicle and see what results you get first hand ?
I was thinking of using it just before we get rid of one in the next couple of years. By then everything should be over 300,000 miles so lots of time for gunk.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
Linear Mode
