What oil would you recommend as having very good ‘clean up’ type properties for a newly acquired older car with some varnish / discoloration deposits? (170,000 miles with an unknown oil change history.) There’s no sludge, just more discoloration than in other vehicles I own with the same engine family at similar mileages. (Mercedes M112 & M113 gas engines.)
It’s not to the point where an “oil flush” product seems necessary (if ever?) – I’d just like to see if some cleaning could be achieved by running an oil with particularly good detergent properties. A short OCI is fine. Anything from the MB 229.3 or 229.5 menu would be nice, but if there’s a particularly suitable other product, that's fine too.
And why do I have a sneaking suspicion that Mobil 1 0W-40 will be among the answers? Is there something else with even higher detergent / cleaning properties that can be used during this cleanup phase? (And then switch to M1 0W-40 afterwards.)
Open to all suggestions... and thanks in advance guys!
It’s not to the point where an “oil flush” product seems necessary (if ever?) – I’d just like to see if some cleaning could be achieved by running an oil with particularly good detergent properties. A short OCI is fine. Anything from the MB 229.3 or 229.5 menu would be nice, but if there’s a particularly suitable other product, that's fine too.
And why do I have a sneaking suspicion that Mobil 1 0W-40 will be among the answers? Is there something else with even higher detergent / cleaning properties that can be used during this cleanup phase? (And then switch to M1 0W-40 afterwards.)
Open to all suggestions... and thanks in advance guys!