can I ask how do you:
check gases and adjust your lambda accordingly
Also I note you guys say 5000 miles, 15000 miles and 30000 miles.... these seems to be a very long way as out where I am at, we use Kilometers and we were told to do things ar 5000 km and 10000 km.... does these things have a date stamp as well? like 10000 km or 12 months which ever come first??