Nulon / Wynns engine flush potions

YES......my Diesel Troopy now has 718,000+ , also add the appropiate additives to the Diffs and Gearbox/Transfer, it's rear giff has done same and runs great,

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I don't believe the flush is necessary with the Petrol engines if you are changing your oil as per normal and at normal intervals. The flush engine treatments are more for Diesel engines IMHO.

NO!

The problem with the products you have listed is that they work.

If you are chasing a specific problem such as a sticking ring or valve or high oil pressure then I suggest you use these products, but if nothing is wrong and you maintain regular oil changes then it's not worth the possible dramas.

You have 280 on the clock and you have never given it a chemical engine flush, flushing it now MAY cause problems.

Regular engine oil/filter change is usually sufficient to keep the engine internals clean. A small build up of sludge and carbon can be easily cleaned with a yearly chem flush but after 280,000km you have more than a small build up, flushing it now could dislodge large amounts of carbon which could be helping keep your rings (and valve stems) nice and tight and blowby free. Not to mention oil galleries....

IMO, Leave well enough alone.