Maintenance

Thats the best way to avoid unexpected vacuum pump failures. Wear inspection ports now make that practical.

A basketful of aircraft cleaners and degreasers perform we’ll enough but Crazy Clean was a surprise winner.

Continentals jugs had more bore wear than the ECI version but both suffered valve guide wear thats worrisome.

We were impressed with this product’s ability to keep bug splats and exhaust stains from sticking to paint.

Fine wires cost three times more than massives. But theyre more efficient and appear to last longer.

Rust may be an engines worst enemy. Aeroshell 15W50 and Exxons Elite offer the best protection.

Were most impressed with the anti-wear properties of AeroShells W100Plus and 15W50. Well look at anti-corrosion next.

Using surgical cotton instead of foam or paper, Challenger filters appear to offer both cleaner air and more horsepower.

A closer look at our analysis of failures suggests that some are preventable.

Four top-rated shops tell us brother-in-law advice on what to look for in engine overhauls.

$350 for a wash and wax job? Sounds pricey but the company delivers on a unique service and the shine lasts.

If you encounter significant corrosion during an annual or pre-buy, fixing it may be an option.