MERCEDES S500 5.0L V8 2002 80K
Top end noisy on start up and on idle. Suspect fault due to contaminated hydraulic valve lifters.
The fault was cured by using Clean & Protect, adding 2 x Advanced Formula Motor Flush for 2 hours, adding 2 x Oil System Protector to the new oil and Advanced Formula Gas Treatment to the fuel tank.
Thanks to Nigel at N J Solutions in West Kingsdown, Kent.
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