A few tips
I'm not a regular user here, but I thought I'd drop a few tips that might not or might have been discussed - so bare with me if these have already been discussed.
Side gaping and indexing sparkplugs
Common trick to get free HP, should add to the economy as well.
Hotter sparkplug
Getting a hot or hotter sparkplug will make it heat up faster and obtain optimal temperature.
Low Octane fuel
Inspired by a thread about hot air instead of cold when for eco driving. A friend claimed he got a little extra distance/tank when running low Octane fuel. So the reaction might happen a bit faster getting more power from each stroke. Driving very economical, detonation might not be risky. Now, I have no idea weather it makes a positive effect. Also, high revs on a hot summer day might be a very bad idea on a moderne engine with higher octane requirements.
Low oil
Getting oil at minimum or even lower, will in some cases lower friction from crankshaft dipping in oil pan.
A side effect is also that the oil heats up faster.
Oil temp monitoring might be a good idea if also running on low viscosity, as low viscosity oil draw more heat.
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