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Hi, I am replacing all the hoses and the thermostat on my NHC-250 this weekend. While I am at it I am going to add a spin on Baldwin base. I am using the Fleetguard ES Compleat Ethylene Gycol coolant Part Number CC2825 directly from Cummins that has the SCA Additive in it. It is a 50/50 premix...

Thanks everyone for the advice! I tried replying from work today but the site was so slow I could not get it to post. Now it seems to fast though. Tonight I changed the fuel filter and put in new o rings. The old filter was very dirty and some had some large sediment in the can. I am certain it...

Thanks for the help guys. I will review all of this and for sure treat it as two separate issues. It does have a shaky idle sometimes when the engine is cold started. Will inspect fuel system and change filter.

Hello! I am new to the group and in Evansville Indiana. My truck is a 1970 XM813 which is a 5 ton 6x6 with the NHC-250 Cummins. I have had it for about a month and so far I like the hobby. The truck generally runs like a top and has very minor or few leaks. I was driving down a state...