Tuning Valve Clearances.

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Tuning Valve Clearances.

I think best to advise anyone using a flush additive or an oil (even flushing oil) with more detergents with intent to shift some internal buildup, its wise to fit a new clean oil filter before this process , as your going to overload an already dirty filter and all the dirt will end up going round the bypass.
then afterwards another new clean filter with your new oil.
 
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