15W40 oil???

[GeoTraveler044]

With my oil leak, i've been trying heavier and heavier oils to slow down the leaking until I can get it repaired. What is the heaviest oil rating that I can use without jeopardizing performance and mileage and the life of my engine?

[frets14]

Where is your oil leak? If it's from the distributor end of the head then it's a real simple and cheap fix.

[GeoTraveler044]

The leak is coming from the timing belt, probably one of the messiest and more expensive oil leaks possible...

Is 15w40 a good choice?

[spy1309]

For the coming winter is the worst choise , at 20F it will be vaseline and the engine will run dry for a few minutes wich will guarantee you no repair because the engine would not exist anymore and thereof no repair to be made.

[Crvett69]

you can add something called seal softener. if front seal is just hard it should slow down or stop your leak, if its cracked its not gonna do much. its worth a sh

[joe_a_buaiz]

Don't be afraid to try and change a seal. In my 1993 Geo Metro, it is quite simple. Might as well change the timing belt while you're in there. If you want something nearly impossible, try changing the seals on a 1989 Mazda 929.

Have fun!

---Joe