Engine/Transmission (1994 - 1998) are all 12 valves painted on the inside?

[TBurow]

i am putting together a new engine for my truck and i noticed a few odd things, the inside of the engine was painted black to help oil drein back to the pan, it is a cummins recon engine from an industrial application. it also has a mls (multi layer steel) headgeaket, when did cummins start using theese in 12 valves? being a reman engine the kdp wasnt addressed, the engine was remanned in 04 and i would have figured they would have fixed it by then.

 

[Joseph Donnelly]

Cummins did not paint the insides of the engines, except for the oil pan, side cover, and front cover. They also did not use a multi layer steel head gasket, at least on Dodge applications, until the HPCR engines.

 

[TBurow]

i have 3 12 valves all with mls gaskets, ond one is a 53 block. all were industrial engines and cummins rebuilds. and they are sleeved on all 6 holes(at least the one i took apart is). so are the mls gaskets better or worse than the marine gaskets?