Originally Posted By: Lubener
Magnets being so cheap, if there was a benefit, wouldn't you think car makers would have them installed on the assembly line?
Some car makers do install them, even on ordinary brands, exotic cars more so. Also find them on transmissions, gear cases, marine outdrives and some motorcycles. Ex. Harley touring bikes have 3 magnetic plugs. Transmission, Primary and Engine.
But the basic thing is, for a super high quality plug, less then $20, last the life of the engine, just wipe it down. Where some go for exotic oils and super high quality filters, the magnetic plug will filter out down to the smallest lowest micron. Id rather have a basic filter quality with a magnetic plug if cost was an issue.
Will you be ok without one? Sure, just like one would be ok with supertech oil and the cheapest fram filter. Some though, feel better about stepping it up a little bit and a magnetic plug certainly makes sense, no snake oil, its a device that is used by some engine manufacturers and you know darn well they wouldnt put it on there if they didnt think it was useful, but just common sense says it is. IF one wants to take things up a step, youll be fine without it too, same as using Walmarts supertech oil.