I don't see how enough oil could get into a combustion chamber to foul
an engine that is running well for even a short time.  Sounds like fuel
system problems, especially with fuel in the oil.

You might want to take it in to a good mechanic, but if you want to get
a good fire extinguisher, a multimeter, and a good fuel pressure gauge
you can check everything out yourself.  The Bentley will run you through
the tests, but basically fuel pressure and injectors should be tested
first.  If you have never replaced your injectors, it would probably be
easiest to do so now and see if that fixes it (the trial and error
method).  Or, you can have them rebuilt at places like NAPA that have
machine shops for about $35 each.

Also, next time you push a vehicle put your back to it and push with
your legs!  Pushing with your arms puts incredible strain on your back.
Been there, done that!

Good luck!
--
Stuart MacMillan
Manager, Case Program
800-909-8244 ext 208

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