Personally I would examine the contents of the oil pan after drain and flush or not based on sludge content, if there is a lot then flush if lttle or none leave alone, wherever you decide add valve lifter additive afterwards it's the only additive I ever use and it does what it says.Hi all
I have a 2004 1.6 TF with 54k on the clock but no service history and about to change the oil and filter. Should I use a flushing agent or just change the oil.
I noticed yesterday that it was sounding a little tapperty
Any advice welcome
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Cheers