Don't take this the wrong way, but I have always had difficulty understanding how anyone that spends >$50k for a vehicle can complain about spending $20 v. $10 for oil?. Engine work down the road could potentially be MUCH more expensive.
'04 ML500 - 53k, Inspiration Edition, Desert Silver
'11 Audi A4 Avant - Brilliant Black
'87 300SDL sold
'99 C280 Sport sold
'85 190E 2.3 sold