Originally Posted by BoilerUpXFire
Every mechanic I have ever spoken to has told me to abide by the recommendation from the manufacturer, they have hundreds of thousands of hours in torture testing every part of the automobile and make this recommendation for a reason.
But can you really trust those engineers? Would it not be just as good an idea to find out what your brother in law (they guy who fixes lawn mowers and works part time for the local tree service) thinks?
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Sarcastic? Yes. But you get the point.