harm, no. but the 0w30 is safe to use. its a proven oil. the 0w is only for cold temps and start up, which you want. the thinner the better, because it will warm up relatively quickly. the 30 is actually on the thick side of a 30 weight, which again is what an LS1 needs. trust me, go GC 0w30 and dont look back. youll be fine.
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yes, my hog is bigger then yours
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