Oil Additive to Stop Leak? Lucas Or 10W40? Head gasket issue

Nov 14, 2009 4 Replies

I have a slow leak in my saturn 2002 sl1 (80,000miles). The mechanic thinks it is likely the head gasket. I get about a 1 or 2 inch diameter oil leak on my driveway every day. Any product that you could recommend? I the Lucas oil stabilizer any good? Or would putting a heavier oil like 10w40 be a better idea to slow down the leak, or is that bad for the engine? Or both? So far I don't see any black smoke from my exhaust. Thanks.


Make sure your valve cover and oil pan bolts are tight - if they require tightening expect a little extra leak as the oil is squeezed out and recheck. I have an 21 year old Astro van with 185K - it was smoking a little at startup. at a friends recommendation I started adding 1 QT of Mobile 1 at oil changes. By the 2nd oil change the smoking had stopped. Mobil 1 swells gaskets - so....

Didn't know about the mobil 1 trick (or that synthetic would mix properly with normal mineral oil).

Head gaskets are a major pain (less so for sohc 4 bangers than dohc V6). Valve cover gaskets are a much simpler solution if that's all that is needed.

Drooler isn't mobil 1 synthetic? If so can it be mixed with regular oil? Linda

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