oliver 88 motor filled

Run an elec fan so you can continue to cool after you kill the motor. No pun intended.

Same for the water pump.
Add a couple drops of dishwashing liquid to break the surface tension of the water and help cooling.

Run the fuel slightly on the rich side.

I do a little maint on one with block filler, over 300 psi and we don't have any problem but try to avoid back to back pulls. We also use a friction reducing metal treatment. You might ask around or order off the internet. There are a couple products that are probably just like what I use and their brand names are Militec and another is Oil Extreme. Both are extreme pressure additives. I have not used either of these but believe they will do the same thing I use and we don't run any tractor without it.