My '97 Corolla has been getting progressively worse mileage since the end of August, from 34 1/2 down to 27-28. New plugs gapped at 31mm, good air cleaner, good tire pressure, no change in driving habits, it runs smooth and idles fine. Any suggestions?
hey hugger wanna show some pictures where to add the seafoam through the vaccuum line?
After your engine is running you can put it in through your PCV vacuum hose(just pop it off) use a small funnel and it will suck it right in(go slowly), make sure someone is inside making sure the car doesn't stall out...after the can is empty and you let it run for a little while let the car sit for an hour or two, then drive it for a couple hundred miles and give it a good oil change(highly recomended)...hope this helps....Raddman
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"honk if any parts fall off"
I'd recommend getting a can of Chevron Techron gas additive and putting it in your gas tank, then filling the tank. My 99 Toyota Tacoma 4 banger got a real sweet jolt of get up and go from this one addition. I never believed much in these hyped products, but Techron, available from Wally World, has really gotten me back some punch on a vehicle with over 150k on it.
I don't know about gasoline, but there are additives put in diesel fuel to reduce its tendency to gell. Those additives reduce fuel mileage. I realize gasoline does not gell, but could there be additives for some other reason added to it for winter? That could be the reason for your reduced mileage.
I'd keep away from crap like that. Also keep away from additives, usually additives are crap and will do harm rather than help. Diesels have additives from the OIL COMPANY, that is put into them in refinaries, not by gasstations, etc, because diesel stiffens when it gets cold enough. Thats why its called winter grade diesel.
I agree on the additives in general, but the Seafoam has proven itself over the years. It looks like I will just have to live with it till it warms up. Thanks all.
Seafoam has proven itself.. yes if you look at their brochures yes.. but I havent seen seafoam used by toyota motorcorp, bmw, mercedes etc in their garages. Only proper way to clean the insides of the engine is to take it apart and clean it mecahnically. Then again, modern fuels, modern engines dont have the same carbon-deposit problems of engines of yesteryear.
Flashmn tends to cover a lot of ground by saying additives are all crap. And, I'd stay away from the tendency to say that major manufacturers of vehicles should "know all about all additives". Motor Medic is flawed in principle, for sure. However, our good motor oils now have lots of additives in them, making them more tightly controlled with viscosity, etc. Blanket statements don't serve much purpose, just outline the opinions that might just be, heaven forbid, a little bit blowsy.
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Gas Mileage
My '97 Corolla has been getting progressively worse mileage since the end of August, from 34 1/2 down to 27-28. New plugs gapped at 31mm, good air cleaner, good tire pressure, no change in driving habits, it runs smooth and idles fine. Any suggestions?
I agree on the additives in general, but the Seafoam has proven itself over the years. It looks like I will just have to live with it till it warms up. Thanks all.
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