Hi everyone. Just bought a 94 b250 with a 5.2 magnum. I will no doubt be asking lots of questions over the coming months...thanks in advance.
Does anyone know the freeze plug size located behind the starter motor, left rear side of engine, please? would buy a kit but I am in the UK and its easier to get one locally.
2nd question, oil pressure ok on start up and then disappears suddenly as soon as it warms up, after about 10 mins. Assume that this is either a blocked screen or worn out pump.
Anyway thanks for any help in advance.

 

A spun rear main bearing will cause this also.

 

Thanks, replaced the sensor and turned out it was intermittently faulty, thanks though