Diesel Engine Pre-Oiler Pump

[Diesel_Pusher]

You make some very good points...especially about dry bearing engine wear, which many, if not most, never consider.

These pre-luber kits are quite expensive up-front.

Permanent magnet 12V motors are quite pricey. As are the small-ish gear pumps that move the stuff around at 5 gallons a minute at 60psi or greater.

I designed (easy to do) my own using a perm-magnet 12V motor and a bronze gear pump available from Grainger (Dayton brand) or fleabay (Oberdorfer or TEEL).
I really hate paying retail and so gravitate to fleabay...I bought several for $125 each instead of one at $475 retail. They are nearly impossible to kill.

An aluminum filter head completes the plumbing. A three way valve makes oil changes a breeze as you can pump it right in a large bucket. I make sure the oil change port has a threaded plug in there when not specifically changing oil. This prevents very expensive mistakes.

A large 3/4" spring loaded hydraulic check valve keeps it all going in one direction. Most have a 2lb crack-open pressure. I bought a box full from a hydraulic place going out of business.

A 12 volt solenoid relay ( Perko Marine, Mercury and similar) used to trim/ tilt large outboards, is very similar to the pre-luber settup.

The motors themselves are similar to outboard motor starters (without the gear) are pretty thirsty with electric and hard on ones wallet. You need healthy batteries to pump many gallons of cold and thick oil and then have enough juice left to start a cold 15L engine.

POST lubing can prolong the life of your turbo...as the lubricating oil cannot dwell and
COKE itself onto the turbo bearings.

I worked a buzzer into the Solenoid circuit so I dont forget that the thing is running and completely discharge my batteries.

The whole unit took a weekend of time to install. A mechanical oil pressure gauge completes the settup... turn it on until PSI reaches 60 for a minute or three...wet bearings...start'er up.