[blucar]

Many years ago I had a newly rebuilt 292 Y block that would not oil the rocker arm assembly.. No mater what we did we could not get oil up through the block..
The machine shops excuse was that the Y blocks were all junk from the get go, not their problem.. Screwed again.. I dislike most engine re-builders with a passion.
We put external oilers on the engine so we could get the truck back to work.. In short order the engine developed other problems. We pulled the engine, went to Ford and bought a factory rebuilt from them, giving them the problem engine as a core..
During the following years that we operated the company trucks that had Y blocks, whenever we needed an engine replacement we purchased an engine from the local Ford dealer..
I can honestly say that I/we had very little trouble with the Y-blocks, we always used Castrol GTX 20/50 which kept them very clean...
I currently have two vehicles with Y blocks, a '57 T-Bird (312).. '59 F100 4x (312)..