oil leak causes
At hwy speed white smok after flooring. When I park car with engine still warm smoke emitting from firewall area
and oil leak at bottom of engine near oil pan. Also rough engine idle.
The white smoke is probably coolant leaking out one of your heater hoses on the firewall. I suspect your coolant level is low as well. get that fixed first. DOes the smoke only come out of the engine bay or also the exhaust, If the white smoke is out of the exhaust, you might have a head gasket failure. The oil leak is either from the rear main seal, lower intake, oil pan and or valve covers. If the leak isn't all that bad, you can just monitor your oil for now until you get it onto the shop. The rough idle could be from the headgasket issue or jsut a dirty throttle body or IAC valve.
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