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Originally Posted by Harpo
Mine seems to start making FE progress at around 90°, and seem to be really good at 105°-110°. I think you'll see a difference. I added another baffle over the weekend, and my return trip averaged ~ 105° IAT today, previously 95°ish.
I went to synthetic oil this weekend. The previous owner (first 36K) used dino oil from bulk drum at dealer. The FWT was 5-8° cooler than similar trip conditions last week. Result - return trip was 46.8mpg (up 3mpg) after those two mods. Daily trip average was busted by an errand I had to run this AM at 8:30 down the busiest road we have. Even with that diversion, I was up 0.7mpg for the day.
My ScanGauge adjustment stays at -1.6% the last three fills. Dead on.
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I realize this is a Honda inspired thread, but I've noticed similar results on my Dodge RAM. When the OAT is about 90*, I see a slight mpg improvement driving back from work. I have tried a WAI from the eng bay side of the radiator to the airbox, but that only gave a 5-7* temp rise. Not enough when it's 30*F outside.
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Originally Posted by Hondaworkshop
Today I commuted with the intake about 4 inches away from the exhaust manifold. AVG temps were 125° and FE increased by a little bit. I'm going to try to get to 105° tomorrow. Thanks everyone for the tips.
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This makes me think I need to remove the insulation I wrapped around my manifolds. I don't think I gain anything from it, other than slightly cooler eng bay temps...might have to start a thread like this one to catalog the journey.
I highly recommend synthetic oils. My truck has seen synthetic since its 1,500 mile mark. If you like to worry (like I do), you can get a filter-mag for your oil filter. It's a curved magnet that sticks to the filter. It traps all the ferrous stuff inside. Remove and stick on the new filter at your oil change....