Originally Posted By: skyactiv
My wife owns an Audi and I own a VW Golf GTI. I need to add 1/2 a quart at the 4K mile mark and I change the oil every 5K miles.
Why bother adding? Is it at the add level, or will be soon at the add level? not saying it's a waste of oil, just not sure it's worth the effort. [I used to have a Saturn, got to the point where I'd add a qt around 2k, then at 3k it was a qt low again--so I'd just have it changed. I tried to time it to save on oil. But perhaps not the best automotive example.]
Originally Posted By: ShieldArc
I'm still wondering why the 8.1 in my 2001 3500HD has used 1qt every 750 mi since new no matter what oil I put in it.
Seems high, but, those were big cylinders. Lots of surface area for those rings to scrape. Not sure it's linear, but at 8.1L it's four times the size of the "standard" 2L I4. So, waving my hands a bit, 4x the oil consumption seems plausible. If so, be glad that a qt every 400 miles wasn't deemed acceptable by the OEM!