my 84 500SEC was dead reliable, comparable to a 617 in reliability and low maintenance. Good power and ran on regular unleaded. Cruised at 85 without raising a sweat and handled very very nicely....only the fuel economy disappointed. Never ever managed 20 mpg highway though if cruising at 60 to 65 would get in the 19s. If really whipping it at 85 it would drop to 14 /15 but what a ride!

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.