It's probably not related to aluminum vs iron block... aluminum engines are almost the standard now. I'd call a local dealer and ask if that much consumption is expected. It could improve after break in.
As a counter example I run a small honda generator with an aluminum block which only holds about 12 ounces of oil and it doesn't appear to use any between oil changes every 2 weeks. On Jun 23, 2016 12:48 PM, "Adam Moffett" <[email protected]> wrote: I had a Generac Guardian running continuously for two weeks. At the end of the two weeks I checked the oil and it was so low the dipstick came out dry. We added almost a quart. It's 990cc engine with an aluminum block. I've heard aluminum blocks can drink oil because they expand more with heat as compared to cast iron.....but as contrary evidence my Hyundai Elantra has an aluminum block and doesn't lose oil over time. The manual says to check the oil daily if you're running continuously, but I thought they were just being overly cautious. The genny's brand new so I'm kind of stunned. Could this really be normal?
