87 to 85 octane-what altitude?
Hi all: taking a trip out West for the first time since 2005. That was done with a 2004 truck and we swapped over to 85 octane at Colorado Springs before taking 70 through Denver and beyond. We are ta...
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RimCountry wrote:
We run the same engine as yours on low-test, we live at 6200', make weekly runs down to 1400' and back, no knocks, no pings, no problem.
Thanks for the info. I am presuming you mean 85 octane when you refer to low test. That would be good info as the concern is about running too rich and cooking the exhaust system. We were behind a guy pulling a trailer about the same size as ours just west of Denver in 2005 and his exhaust got so hot the truck caught on fire and was totaled. We managed to get his trailer unhooked and gravity helped us roll it back and out of harms way. It was not a good day for him.
I guess I could also run it on E85 as it is capable of that but that has another set of drawbacks.
