92 Sierra performance Question

[Chevy-forever]

I have a 92 Sierra,305 automatic,which I drive 26 miles a day to and from work.I only average 16 miles to the gallon and am looking for advise on how to improve,like K@N air filters, will these help?So far everything on the truck is stock including,Accel plug wires,new distributorcap and rotor,sparkplugs,ignition module.Would a MSD ignition improve fuel economy?Thanks in advance!

[taillight]

Systhetic oil in the engine, differntial and transmission.

[Z15]

Nothing is going to improve the mpg enough to make the work worth the costs of the upgrade. You are pushing over 2 tons of truck down the road and that takes fuel. You will spend hundreds to save only pennies. K&N filter is never going to give you any mileage nor is an MSD ignition, its just going to cost you money that you could be spending on fuel.

I had a 1992 Chevy Silverado with the same engine. 16 mpg is average for a 4x4 truck, my 2008 GMC is only getting 18mpg and these engines are more efficient than a 1992. You either got to bite the bullet and live with the mpg or get another vehicle to drive to work and save the truck for when you need a truck.

PS-Before you dismiss my advice consider I have owned 4x4 trucks dating back to 1975 so I know a little about the mileage and tried many things to no avail.