[Vwdiesel] Mixing Synthetic & Dino Oils

[Brett]

It shouldn't hurt it at all, as long as you're using oils that have at least
the proper rating (CD/CF for old IDI engines, CH-4 for TDI). Usually during
the winter my oil changes consist of half  Mobil-1 5w or 0w30 with half
Delvac 1300 Super/Delo 400/Rotella 15w40 conventional. I haven't blown up an
engine yet as a result. :) Just my experience of course, and if I had a TDI
I'd be using full Delvac 1 or Rotella Synthetic.

-Brett

> Okay hopefully this isn't the dumbest question in the world.
>
> I have been running using Mobil 1 10W-40 the last year or so. However, I
> still have a case of Dino (Chevron Delo) in the garage. Yesterday morning,
> in the dark (prior to getting my caffeine fix) I grabbed a quart of oil
from
> the wrong shelf and inadvertently put in a quart of the non-synthetic into
> the car. I didn't notice until that afternoon when I went to throw away
the
> empty bottle.
>
> So the question is, is this bad to have mixed synthetic and non-synthetic?
>
> Should I drain my oil and refill immediately?