Detroit Diesel and straight weight oil

[TiredTrucker]

The only Detroit 2-stroke I ever dealt with was the Detroit 3-53 in the Army Gama Goat vehicle back in the early 70's. Wow, what a screamer! Sure didn't sit in front of that motor without hearing protection. Totally weird vehicle.

 

[Doug Hillary]

Hi,
IME the last versions of the DDEC 8V92TTA (Twin Turbo After-cooled) engines capped off decades of this engine's development very very well. In the correct OTR application they were quite fuel efficient too. Many people don't know that these engines were supercharged of course and required large volume of clean air to survive

 

[A310]

I know this is an old thread, but I do own a 1979 Detroit 4-53T. I too have been told to only run straight oils in Detroits and do run Chevron Delo 100 SAE 40. In the future I will be installing this into a daily driver and do some oil analysis to see what the difference is between running the old girl on straight oil versus the new synthetic multi grades. I switched up my 1960's OM 621 to multi grade oils from Delo 100 and never had any trouble at all, 300,000 miles on that engine and ran like new before I sold it. If you like old Detroit Diesels and old diesels here's a couple video's:

Test my new Jakes:
https://www.youtube.com/watch?v=uhM0563drn8

OM621 Cold Start:
https://www.youtube.com/watch?v=uhM0563drn8