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I have been mixing STP with my motor oil since 1982 after rebuilding my Norton motor for the Featherbed frame, my Norton was an everyday rider for most of its life with me and has clocked up a lot of miles, about 15+ years ago I had to replace the crank cases and a full tear down of my motor but to my surprise the cam lobes where still in great shape, my original cam was built up and had a 2S cam grind when I built the motor for the Featherbed frame over 42+ years, as well very little wear on the conrod bearings and the main bearings had no wear at all (all bearing replace of course with the rebuild), call STP snake oil but it has proven to me that it works, I mix 500ml of STP to 2ltrs of motor oil.My round alloy oil tank is only 3ltr, I run an Lochart oil cooler all year round since 1978 and the STP from 1982 when the conversion was done, as for my timing chain it was replace 15+ years ago but I run an auto timing chain adjuster which was also installed back in 82, when a timing chain gets loose it does make a rattle noise when idling.Ashley
I have been mixing STP with my motor oil since 1982 after rebuilding my Norton motor for the Featherbed frame, my Norton was an everyday rider for most of its life with me and has clocked up a lot of miles, about 15+ years ago I had to replace the crank cases and a full tear down of my motor but to my surprise the cam lobes where still in great shape, my original cam was built up and had a 2S cam grind when I built the motor for the Featherbed frame over 42+ years, as well very little wear on the conrod bearings and the main bearings had no wear at all (all bearing replace of course with the rebuild), call STP snake oil but it has proven to me that it works, I mix 500ml of STP to 2ltrs of motor oil.
My round alloy oil tank is only 3ltr, I run an Lochart oil cooler all year round since 1978 and the STP from 1982 when the conversion was done, as for my timing chain it was replace 15+ years ago but I run an auto timing chain adjuster which was also installed back in 82, when a timing chain gets loose it does make a rattle noise when idling.
Ashley
