I recently changed my car engine and when I have the windows down I notice a rubbery smell which comes into the car.
Any idea what this might be and what I should do about it?
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After an engine change it's not unusual to get the odd oil or fluid smell, as any spilt or residual fluids evaporate from hot parts. However this should not last long, sometimes following the next few start ups you'll get a little whiff of the same smell but it should subside quickly after that.
If we're talking days since the engine swap you need to start checking around for fluid leaks, and also making sure there's nothing rubbing against any hot surfaces etc.