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oil mixings

  1. L

    Gas and glow Mixings/ HHHEEEEEEELP!?

    Hi, i was looking at some gas engines and was wondering a few things.#1 I saw a cox engine that said "25% nitro" does this mean oil or what.#2 What is the mixing of oil to gas for nitro engines?#3 I was looking at a couple of "vintage" engines on ebay. They did not say anything about gas or...