I managed to de-cease my 2.25 petrol that had stood outside for 6 years with lots and lots of wd40 down the bores, and rocking it back and forth, back and forth for a good 1 1/2 hours, each time getting a bit more movement. Itll smoke like a pig when I eventually start it up!!
Got motor out it had around 6lts of water in it as well as oil.
Think im going to have to beat out pistons