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Original Lister Cs Engines / Re: Lister JP4 - which oil should I use
« on: July 25, 2023, 08:23:38 AM »Not sure where you are located but here in the states all 15w-40 oil is diesel rated. Look for CK4 or better ratings. Actually any detergent motor oil available today is superior to what was available when it was made.
Never did understand the mineral oil deal? what else is there that one would out in an engine ?Olive oil? LOL
Late reply I know but definitely NOT a modern detergent oil although low detergent acceptable. Reason for this is engine has no full flow oil filtration system so wear particles need to be able to fall freely to bottom of sump out of harms way to be cleaned out during oil change. Modern dispersant detergent oils encapsulate wear particles to be caught by filter. Without such they just circulate around bearing surfaces of engine
I used Morris Golden Film SAE30 in my JP which is to the old API SD/CC low detergent spec. I'm sure there are classic motor oils in the US or Europe with similar CC suffix spec.
Richard