Those running cam 2 or any high test 100 octane or 110 octane, will pretty much alleviate any vapor lock issues with it's slower burn rate. That's why I mentioned the higher octane gas you run, the better off you'll be as far as hot start issues and vapor lock.
Top Tier stations have seemed to be the best for me, even though their gas still has ethanol, it's a more refined fuel and the ethanol content seems more consistent. Usually costs a bit more than the generic stations. Here's a site for Top Tier stations. Just click on the locater at the top of the screen to look for Top Tier stations in your area..
https://www.toptiergas.com
To touch on the consistent ethanol comment. Several years back I was testing ethanol at a few local stations with those cheap ethanol kits you buy on ebay. I'm a fanatic tuner and was curious what I was putting in the tank, since ethanol affects the air fuel ratio needed. I found some stations had as much as 17% ethanol so it wasn't very consistent from one tank to the next. I don't know if they monitor this more closely these days but interesting none the less.
As far as additives Big Bear, I really don't know of anything that actually does what it says at raising the boiling point, or octane level. There are fixes in a bottle that people claim work
I've just preferred to avoid that scenario. Since we daily drive them I just want to fill up the tank and go type of thing. So I spend a lot of time on the fuel system, engine temps, and the tune, to make sure it doesn't give me issues with the crappy gas we have these days.
The only thing I do add that I mentioned earlier, is 2 cycle engine oil with TCW3. Just to give the gas some lubricity, and has cleaning properties. Good for the valves, guides, rings, etc... Doesn't do anything for octane or vapor lock issues though.
10-25-2018, 11:46 AM
Hybrid Mode
