When set to 50% it really does not oscillate at all, but when set to 70 it actually fluctuates alot from 60's to 80's. The guys at the indy shop said a 70% was rich not lean?
I also am putting a new chain in in the morning as I have 10 degrees of stretch.
2005 320 CDI
2006.5 VW Jetta TDI
1991 560SEL (179000 Sold)
1972 280SEL 4.5 ('The Lead Sled' 320000 miles when sold.)
1972 220D (225000 when sold)