Quote:
Originally Posted by Scottio57
I hope 87 isn't bad for my engine. I've been using it in my T with a Z head and my A with a B (police) head for many years now. I use 87 in everything except the V-10 motor home that requires mid grade.
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Some are telling me, if you have a stock motor its ok, but if your engine has upgrades with higher compression, no. I can only say one thing I know, with my back pack Redmax blower I only use 89, because the store I bought it at says they will void the warranty if you use 87.