using seafoam in oil

[stvgitz]

I thought about pouring some seafoam into the oil a few days before an oil change. Does anybody foresee any problems this might pose? This would be in a classic. I've been told it can cause a lot of sludge to clog the oil pump. With 79,xxx miles, how much sludge could there be?

[Randy T.]

There should be no sludge if you keep your oil changed and don't use Penzoil. Seafoam makes your oil thinner, I would not want to drive too much with your oil like that, if you want to add it before, do it 5 minutes before the oil change and keep in mind some oil remains, and so will some Seafoam. I stay away from Seafoam, I don't like it, that's my opinion.

[RCA1186]

I used it in my oil once but I did it as Randy states, the day of the oil change I ran a few errands with it in there, I also did the vacuum line and gas tank. Seafoam can work some wonders, got rid of a carbon problem my brother had on his Chrysler which in turn helped him pass the emissions test. Just be carefull adding to the vacuum system, I had it back fire and puff out smoke on me haha.

[tigger]

Mar 11, 2014 6:03:27 GMT -6 Randy T. said:

There should be no sludge if you keep your oil changed and don't use Penzoil.

[oldswmachines]

I have been using Lucas as an additive for years. My 98 Aurora had almost 200k oil pressure at idle is 12-15psi w/o and 19-20 with. You make the call. Had over 350k on my 93 Cultass. I also started changing the oil at longer intervals. With no more than a pound or two difference in pressure


Go Olds

[Marc]

I don't know about the Classic, but the owner's manual & FSM for the 2G say not to use any oil additives.

[electrostatictommy]

I always add ZDDP zinc additive at oil changes. New oils have this additive removed. It is essential for our cams and lifters.

[buck91]

Used seafoam once or twice in my '80 yamaha 850. The next year when I opened the top end it was spotless. Cause and effect or coincidence I dont know.

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