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Originally Posted by haasman
If all the above problems are related to hydraulic lifters, Larry Bible on this site had a great suggestion that I have used with good success: Run a diesel oil in your engine for a few oil changes. Use a 15w-40 type. The diesel oil has better cleaning and oil impurity suspension qualities. It helps in cleaning older engines and their valve train.
Haasman
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That's an interesting suggestion. I wasn't aware there was a special oil for diesel engines, probably because I've never owned one. However, just for reassurance, if I was to do this, will it mix OK with normal oil or should it be flushed before changing?
(Might seem a silly question but the last time I caught a diesel discussion mid-thread I did ponder, just for a minute, the practicalities of putting a bottle of high-detergent ATF into my petrol tank to clean out my injectors
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