Nice but I'll stick with the OLM in the HCHII. There's such a wide swing in temps here in MN and I don't want to push it. With all the driving I do, the oil usually gets changed at 8K. In my case, I wouldn't be saving that much money and no concern for the environment b/c I recycle my oil.

Orient Express, what % does your OLM read when the oil is changed?