Filling a engine with WD-40?? make it new again?

[89FHPLX]

Dont get me wrong, My engine is not about to give up. I got great oil pressure, and excellent power. I changed my oil every 2,500 - 3,000 miles. Its just that annoying lifter sound you hear especially when you are next to a chevy or any other car. My engine is great but the lifter noise is whats bothering me. Its not load but you can hear thats there is something wrong there. This car was always takeing care of even from the Florida Highway Patrol.

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89 Police Interceptor
BBK Shorty Headers, K@N Cone Filter,H-pipe no cats, 2 chamber FlowMasters,Under Drive Pullys,14 degree Timing, Short Belt, No Air Silencer, oil cooler, 3.08's, And All Police Package goodies