I personally think it is MORE than fair.
I would have loved for one of the owners I drove for to change a deal like that to my advantage, simply because fuel prices went up, especially if your original deal was 60% with you paying your own insurance. I ran a long time at 50%!
Lemme throw some numbers here just to show my point, based on my own mileage, etc... see if I'm far off...
Assume fuel cost of $1.50 per gal,
Mileage of 11 mpg, gives a fuel cost of roughly 14 cents per mile.
If we also ASSUME
you run 2000 paid miles per week, that gives a total fuel cost of $280.00.
(1.50 per gallon /11 mpg) x 2000 miles=$280 fuel cost
At $1.80, (which it got up to) that would be about 16 cents per gallon.
(1.80 per gallon /11mpg ) x 2000 miles = $320 fuel cost
Difference in fuel price, $40.00.
Now, that same 2000 miles, assuming $1.10 per mile pays $2200.00 to truck.
Your pay at 60% = $1320.00
Your pay at 70% = $1540.00
At 70% you get $220.00 more a week on average, minus the $40.00 increase in fuel cost, leaving you with an extra $180.00 per week or a yearly amount of $9360.00 above the original contract if prices stayed up that long!
I would say thanks for the extra money, consider it a bonus, go back to my original deal, and stick with a truck owner who had taken care of me and I had got along with for 2 years! If you stuck for 2 years, something had to be right!
But, that's just the opinion of one tired ol' longhair who's seen his share of truck owners screwing their drivers and sticking THEM for extra expenses!
Peace!
Dreamer
"Remember, one bad day on The Road is still better than two good days stuck in an office!'