ORIGINAL: JUGFLIER
ORIGINAL: 103/17
No OEM can legally void your warranty for running "the wrong" oil. If the oil used at the point of failure is of the same quality as specified by the OEM they have to honor the warranty as stated. Brands specific warranty denial is not possible in the US. A manufacturer can threaten it but it wont hold up. Trust me I have been there.
103/17
According to the Magnuson-Moss act, if there is a brand specific oil for warranty, It must be supplied at no cost with the product itself.. Thats the law in the U S of A.
Is that why MVVS supplies the oil with their new 45 and 58 engines?
Lets face it. Oil is extremely important, and not just any oil will do.
However, it is not the subject of this thread. 4 plugs were wasted, all black and fouled. This is not an oil issue, and also not an oil ratio mix issue, it is an issue of running the engine way too rich!
I have been racing on 5 - 6% oil in the mix and still had nice brown plugs if the engine got a fighting chance to warm up before the cold racing plug fouled.
Spoiling so many plugs in sequence just means that the mixture is, or gets way too rich for whatever reason. To name a few:
1) idle and/or main needle opened too much. Needles must be adjusted correctly by the user!!!!!!
2) choke valve closing in flight like mentioned before?
3) CARB MAIN NEEDLE inside the carb not closing properly
4) if air filter, if used: clogged filter
5) to much pressure on carb regulating membrane (cowl/carb issue), reference pressure item.