– STP Oil Treatment For Petrol Engines 450ml

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Dopo aver letto le varie recensioni, ho voluto acquistare questo additivo da mettere nel motore della mia Peugeot 106, datata con 239000 km percorsi. Ho notato subito la differenza .... La macchina adesso va più fluida, a motore freddo si avvia senza fatica, il cambio di marcia è più fluido.... Soddisfatto a pieno di questo prodotto. Lo consiglio vivamente.

I add this to the oil in my 1985 Ford Capri to protect the camshaft from the wear it's so notorious for. The reason is that this original thick gooey STP in the blue bottle is one of the few oil additives that still contains ZDDP, the magic anti-wear ingredient essential for older vehicles, but removed from modern oils in case any blow-by gets burnt and damages emissions equipment (primarily the catalytic converter). This is why STP have made the new version in the black bottle for modern cars. Seeing as my Capri doesn't have a catalytic converter, I just need loads of ZDDP and this is a cheap way of adding it to modern oil. I put 10w/40 in the Capri, and from a few simple tests timing a gallon draining through a small funnel, it looks like adding this to 10w/40 oil changes it pretty-much into 20w/50 oil (I have some lying around to compare). This agrees with the change in reading from the car's oil pressure meter at idle. The car idles smoothly and quietly with this additive in, and when I take the rocker cover off to adjust the valve clearances, the scoring on the camshaft doesn't appear to be getting any deeper.

What a fantastic product. In the past I have always used SLICK 50, but wanted to see what else was out there to help protect my Mercedes engine. I looked at a few reviews and picked on this. For the price I was not expecting much considering how much I spend on other oil additives. The bottle arrived in the timescale promised, and well packaged. I had just had the car serviced and wanted to add a bit of protection to the engine. The instructions said I could add it to the oil and as the bottle is not too large I took the chance and began to pour into the engine. First thing that surprised me was that it was like a gel and not like an oil. I poured the additive in. I made the mistake of pouring it in like an oil, which soon filled the spout to the engine. Please when you use this pour VERY SLOWLY. This will stop the spout getting blocked. I have now driven the car for a couple of hundred miles and the engine is so much quiter. (Even the wife has noticed this) I cannot recommend this enough and I have had all sorts of cars over the last few of decades and this has been my best car based purchase. I hope this helps with your choice