Author Topic: Stop leak aditive for engine oil? (Read 5309 times)

MidgetMike · « **on:** Apr 19, 2005, 08:37:41 AM »

I replaced all the seals I had leaking, front and rear mains and a few intake side bolts missing and broken to stop all my oil leaks which caused my timing chain cover to spew a 1/2 a quart a week. I want to put a 20R head on so I was trin to keep from doing a head gasket and threw some stop leak in to see how it would work and it did almost immediately which I found impressive but I am wondering about how long it will last and what adverse effects it may have?

BLACKDOG · « **Reply #1 on:** Apr 19, 2005, 10:32:03 AM »

I used a stop leak additive on my dodge, and never noticed any adverse effects. It stopped all the leaks, and after about a month, they would start seeping again, and I would put mabye a 1/4 of a quart in, and it would keep them sealed up. Once it was in there, it didnt take much more to keep it sealed.

Weldo · « **Reply #2 on:** Apr 19, 2005, 12:37:17 PM »

What brands did you guys use? Maybe I'll give that a shot for my oil leak.

BLACKDOG · « **Reply #3 on:** Apr 19, 2005, 12:42:33 PM »

I'm wanting to say I used a lucas product, but I am not sure. It was actually oil with the additive already in it that I put in the first time, then I used just the additive after that.

Weldo · « **Reply #4 on:** Apr 19, 2005, 12:48:33 PM »

I saw Lucas oil stabilizer at the local auto store. Didn't say it would stop leaks, just makes hte oil stick to the motor better. I gotta keep my eyes peeled.

RUGER · « **Reply #5 on:** Apr 19, 2005, 12:51:54 PM »

i think the stuff my dad has is called 'bars stop leak'

happy trails
rich *ruger*

BLACKDOG · « **Reply #6 on:** Apr 19, 2005, 12:54:33 PM »

Its been a while, and for some reason, my toyota doesnt need it

2 engines and neither ever leaked. There is something called Marvel, o rmarvelo, or something like that in a red bottle, you might look at that. The stuff I used didnt say lucas on it, it had a different name, but the back said that it wasa lucas product

Weldo · « **Reply #7 on:** Apr 19, 2005, 12:56:49 PM »

OK cool, thanks a lot!

BLACKDOG · « **Reply #8 on:** Apr 19, 2005, 01:00:24 PM »

Sorry I cant help more, I sold the dodge 2 years ago, and left the bottle in it for the new owner

Weldo · « **Reply #9 on:** Apr 19, 2005, 04:32:51 PM »

I just picked up some Bars Leaks stuff. I saw the other stuff at the auto store, too, Marvel Mysterious oil or something like that. I added hte Bars Leaks, says it should stop a leak in 3 days of driving, but if it doesn't, the motor "may require mechanical attention."

MidgetMike · « **Reply #10 on:** Apr 20, 2005, 08:20:43 AM »

I used the Marvel brand it was thick and clear.

BLACKDOG · « **Reply #11 on:** Apr 20, 2005, 12:11:57 PM »

Quote from: Weldo on Apr 19, 2005, 04:32:51 PM

I just picked up some Bars Leaks stuff. I saw the other stuff at the auto store, too, Marvel Mysterious oil or something like that. I added hte Bars Leaks, says it should stop a leak in 3 days of driving, but if it doesn't, the motor "may require mechanical attention."

or you just need new seals

BigMike · « **Reply #12 on:** Apr 20, 2005, 12:35:44 PM »

Try a straight weight 40 wt engine oil or something

Weldo · « **Reply #13 on:** Apr 20, 2005, 03:42:15 PM »

I been using straight 30 for a while. 40 or 50 wouldn't be too thick would it?

BigMike · « **Reply #14 on:** Apr 20, 2005, 06:01:47 PM »

I don't have any experience with either, but I would question 50 weight..

But Valvoline sells their VR1 "Racing" minerial oil in a straight 50 weight, and its "intended" for high reving engines. Yeah, like old worn out engines or something??'

Ha, look what I just found, a 10w-60 as a RACE oil:

Unless every part in the engine is forged and needs to warm up to expand, I can't imagine why anyone would need a 60 weight when cold, unless its some loose V8 engine.. But I dont have any experience with this and maybe its a natural thing for race engines

Weldo · « **Reply #15 on:** Apr 20, 2005, 06:30:52 PM »

I know air cooled motorcycle engines use a straight 50 weight oil. I'd imagine the heavier weight oils coat the parts better and hold up better in high heat applications. Maybe that's why race engines would like a 50 or 60 weight. I saw straight 40, 50, and 60 at Pep Boys the other day.

BigMike · « **Reply #16 on:** Apr 20, 2005, 07:17:51 PM »

That makes sense, but I would think that most high reving engines are smaller in size and therefore have tighter tolerances. And if the oil is 60wt when cold and 10wt when hot, the 10wt is great, but I would not want to have 60wt in my 1.6l engine

But maybe that's why my little engines never held together

reklund5 · « **Reply #17 on:** Apr 20, 2005, 09:22:12 PM »

I think it was the excessive manifold pressure that killed your 1.6...not the thick oil on cold starts

MidgetMike · « **Reply #18 on:** Apr 21, 2005, 08:09:30 AM »

The marvel blew out yesterday i just have to sack up and change the head gasket. you can see the the engine was professionaly rebuilt but it looks like the jack

that put it in didn't know

and left the t chain cover loose and put t chain cover bolts in the wrong spots. So i will get a weekend off and use my buddies shop and change that out

Bob Garrett · « **Reply #19 on:** Apr 21, 2005, 10:07:59 AM »

Might be worth trying one of the oils sold for "high mileage" vehicles. Most of 'em are a synthetic blend and have a seal sweller that may help.

Bob

Weldo · « **Reply #20 on:** Apr 21, 2005, 12:10:47 PM »

Quote from: BigMike on Apr 20, 2005, 07:17:51 PM

That makes sense, but I would think that most high reving engines are smaller in size and therefore have tighter tolerances. And if the oil is 60wt when cold and 10wt when hot, the 10wt is great, but I would not want to have 60wt in my 1.6l engine But maybe that's why my little engines never held together

I bet here's a few high revving bigger motors out there. NASCAR engines turn upto like 9,500 or higher sometimes. Its takes a pure race engine to spin that fast tho, so like you said, most higher revving motors probably are small.

One more thing. When an oil says 20W-50 for example, does that mean 20 when hot and 50 when cold? Or is it 20 when cold and 50 when hot? I've heard both ways. I heard it's thinner in the cold weather to help with starting the motor, but it makes more sense that the oil would thin out at higher temps. So whats the deal here?

MidgetMike [OP]

MidgetMike [OP]

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