rigjockey, your totally right about the little green arrows. Any good operator can tell a loose nut by the streaks of oil on the rim. We just modified our product because of the fact that in Canada, most fleets are opting to use the green indicators.
With the kinda weather we get up here you can't even tell you have the green wheel checks on in the spring time they're so muddy!
Our nut cover was designed to keep the crap off the threads and prevent corrosion from settling in. So far they seem popular in these parts. It's been a long blustery winter up here and its snowing another foot tonight.
I was talking with the Alberta Ministry of Transportations Vehicle Inspection Chief and there were 25 reported wheel off incidents last year in 2010, 2 were overheated wheel bearings, one not identified and 22 were loose wheel nuts. Mostly attributed to poor maintenance and inadequate re-torquing. Like Bigyellowpete indicated with the last thread, the 2 overheating hubs were due to bearing failure. I'd like to know the National Stats for "wheel offs" on both sides of the border. It seems there is no mandated regulation on the subject unless someone is killed. Alberta seems to be the only Province in Canada interested in the topic. It is likely contributed to Oil & Gas Exploration as producers are very safety conscience. We need more operators on the roads like you guys!
Cheers,
