Member
Can anyone recommend a head gasket sealant for an X5 3.0si?
Member
Don't waste your time or money on some "mechanic in a can". They don't work. If your engine has been overheated to the point of a leaking head gasket, the damage has been done, and a can of liquid crap won't fix anything. The head is likely warped and/or cracked.
ASE and BMW Master Certified Technician
Member
What he said. Also if you use a sealant, there is a risk of sealing things other than the thing you intend to seal.
Member
My one experience with head gasket seal in a can type products was with buying a car where the previous owner had used one to deal with a head gasket problem that he didn't tell me about. It lasted about a month after buying the car before letting go. Do the job right and cry only once.
Matt Cramer
1997 BMW 328i convertible, 1972 Chevy C10 pickup, 1966 Dodge Dart slant six
BMW - where "Why doesn't everybody build cars the way they do?" meets "Why can't they build a car the same way everyone else does it?"
Member
I’ve used this stuff before https://amzn.to/2w2bv0a
Seemed to keep the car going pretty well to be honest. Before I added it was pretty sure it was going to completely blow on me but after adding sealant it stopped. Really just depends on the severity of the car though.
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