Be careful with Greased Lightning! It is not for use on painted surfaces or on aluminum (stated on the label)!! Simple green gets my vote.
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Stan
2001 2500 SLT+ Quad Cab, 6 speed, ETH, 4X4, LWB, 3. 54 LSD Trailer Tow, Camper Special, 241HD, Tow Mirrors, Bright White, Line-X Bedliner, Putco Boss SS running boards, A. R. E. K Series Truck Cap, Reese Titan V Hitch, 2WD Low, DD 4" exhaust, BD exhaust brake, Isspro Boost and EGT gauges, Mag-Hytec rear cover with Amsoil Series 2000 75W-90 synthetic, Amsoil Dual-Remote Cummins Oil Filtration System (full-flow & by-pass); Practical Solutions Boost Module/Elbow; Amsoil 2 Stage Air Filter