The 1986/87 cars suffered from the over-engineered emission systems, high failure Trap-oxydizer. If the engine over heats the Aluminum head can crack!!(temp gauge is standard equiptment)! Also the car has low coolant lamp! 1990 + later engines seem like they are somewhat more fragile, oil consumption & bent rods. Nobody is perfect.
MERCEDES BENZ MASTER GUILD TECHNICIAN
ASE MASTER TECHNICIAN
27 YEARS M.B. TECH