What would you pick as your five top, tried and true, tips?

[COMP]

good stuff drafting helps my old truck

[Andyman]

Originally Posted by Andyman

Top 5 modifications:
1) Warm air intake
2) Grill block
3) low viscosity synthetic engine oil
4) Fuel heater connected to heater hose or radiator hose
5) Hydrogen injection with lean fuel mixture (see www.hhowater4gas.com)

I guess I made a mistake. These are supposed to be tried and true tips but I've never tried a grill block, fuel heater or hydrogen injection. I just think they would be worth doing based on what I've read. Here's my updated list of modifications.

Top 5 modifications:
1) Warm air intake
2) Remove engine driven cooling fan if equipped, replace with an electric fan.
3) Use low viscosity synthetic engine oil.
4) Retard the camshaft(s) a few degrees. This may require ignition and fuel mixture adjusments. Note that if the timing belt is old, the valve timing may already be retarded. Tightening the timing belt tensioner (if not self adjusting) will retard it a little more. If the distributor is driven by the camshaft, the ignition timing may become retarded. Advance it at least to specifications to get better fuel economy and power. If it is advanced too far, the engine may knock during acceleration. Note that retarding the camshaft will reduce low speed power but it may increase power at high RPM. If you have slow acceleration you might not want to do this.
5) Optimize the ignition timing, including centrifugal and vacuum advance curves.

[dremd]

You know, maybe our suggestions should be based on intended audience. I give entirely different pointers to different people based on what I think that they will do. Of-course SVO Boy will filter accordingly . . .

[Gregte]

1) 0w-30 synthetic motor oil helps significantly over 10w-30 (oil pumps work hard to push cold oil).
2) 75-90 synthetic gear oil in the rear end (or wherever your vehicle uses 80-90)
3) pre heat the engine in colder climates but don't over do it as you are wasting electricity if you do.
4) coast in neutral wherever possible UNLESS your hill requires braking and your injectors automatically shut off during deceleration.
5) Drive even slower yet into the wind. Compensate for lost time by driving faster with the wind. It will all even out time wise.

[Lazarus]

Originally Posted by Gregte

5) Drive even slower yet into the wind. Compensate for lost time by driving faster with the wind. It will all even out time wise.

I'm not sure about this one as a strictly fuel saving statement.

[SVOboy]

Originally Posted by Lazarus

I'm not sure about this one as a strictly fuel saving statement.

It works on the bike,

[Lazarus]

Originally Posted by SVOboy

It works on the bike,

I don't know about that one either. More then likely you're developing the same amount of watts but it's the perception of ease with a tail wind. But I'm getting the thread to OT. Might make a good thread for driving into headwinds.