What engine oil?

[Ukraine Train]

What commonly available oil should be used in these trucks? Mine is an A0 model with 3116 engine. When I search "cat 3116 oil" I see some people saying it has to use straight 30 or 40 weight but in the TM I see OE/HDO-15/40. How many quarts does it take to get from the "low" to "full" lines?

Somewhat related, I thought I saw someone mention that with the cab lifted, there are controls to start and stop the engine. Does this apply to A0 trucks? I didn't see anything like this when looking around today.

Edit: Seems the straight 30 or 40 is only for marine engines.

 

[Lmtv772]

I talked to cat and they said to use any 15/40 I like.
The controls you're talking about are on the A1

 

[tennmogger]

I use Rotella 15W40. No doubt there a dozen oils that would do the job.

Low to full: A plastic coffee container 2/3 full! About two quarts, if I recall correctly. I remember that from topping up after an oil change.

I have not found any such starting setup on my '94 A0