Previous to my ZR2 I had a trail boss with the 6.2. Only ever put regular in it and never had a single issue. GM recommends using premium, but they also say regular is fine (I believe this can be found in the owners manual but I haven’t had a chance to look). I think with modern tech the engine is able to compensate for the lack of compression and run smoothly. I will continue to put regular into my ZR2, at least until gas becomes reasonable again (if that ever happens).
Here’s link to a forum where this was being discussed.
There have been multiple threads/posts on what fuel to feed the 6.2 beast. Since GM only recommends premium fuel, it’s become a gray area and most people don’t like gray areas. Not surprisingly, there are passionate opinions on either side. I for one am a facts guy and prefer to go with actual nu...
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