Volvo RWD Forum

I am still a little tentative about the seafoam. I mean, I have read 95% positive reviews about it. But, I still have this fear of screwing with an old engine (1991 244 113000 miles) and dislodging something, or clogging the cat. But, I have decided that I can't live with the crap gas mileage that I am getting. I also have a slight rough idle that is driving me nuts. I just hope I don't screw up my engine.

I have decided only to use it in the gas tank, and sucking it in through a vacuum line into the intake. I have also decided to just drive the car pretty hard after it sets for 20 minutes or so, and not rev the guts out of it with no load on the engine.

Well, I did the seafoam thing today. But, I kind of didn't completely follow directions. I first sucked one cup of distilled water into the intake. Then, I did 1/3 cup of the seafoam, let it stall, sit for 20 minutes, then started it up, and revved it a bit, not super high RPM'S but it did smoke some, Then, I should have driven it hard at that point. But, I sucked another 1/3 cup of seafoam into the intake, put 1/2 can into the gas tank with 9-10 gallons of gas, and then took it for a hard drive. I put it into second gear (auto) and it did smoke quite a bit, but not as much as I expected.

It does run a little better, but still has a slight rough idle. I did notice a difference when I put it in the gas. But, that could be from the fact that it is a little more volatile, or boost the octane up a bit.

Really, I have not driven it enough to tell how much difference yet. And the real reason for this is still chasing my rough idle, and crap gas mileage. Do the auto 240's all get that much worse mileage than the manual cars? My bro gets WAY better mileage w/ his 89 240 with manual trans.

Hi,


Wear a respirator.


Goatman

And park with the tailpipe downwind! But seriously, you shouldn't have any problems with the procedure. Let us know how things, um, came out.