Any good Diesel rated oil like Delo, Rotella, Delvac, etc. is just fine. Probably in the 15W- 40 variety. Coolant, I'm not real sure about, I just used regular coolant in the 50/50 mix. I'm sure someone will let you know if it's anything different. And welcome to the forum.

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1985 300D Turbo ~225k
2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k
1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k