Have you have that smell also for about 4 years, or is it new?

exhaust system leaking, and pushing exhaust backwards through rear
pillar grill into windows air vent?

Otherwise, never heard that before, except on cold starts...

Regards
Raimund

Am 12.06.2017 um 16:16 schrieb Don Hanson:
> Hold off on the comments on the subject.
>    My 84 5sp with an ABA Jetta inline 94:. It's always seemed to put out a
> little too much exhaust during backing up.  I've had "used-up",tired motors
> in the past...smell like blow-by or burning oil.... the Vanagon I have now
> smells like that, but ONLY when I back up....no smoking and no oil residue
> on the back... Only when I got in reverse.
>    I use a quart of 10-40 about every 1000mi.  Oil consumption hasn't
> increased in about 4 yrs...
>   Guesses, anyone?