Hi, John
  I was over at the IH page on the Yesterday's Tractor site and saw an exchange about the proper octane gas to run in a 706. It got me to thinking that I read in the 1800 operators manual it called for 92 or 93 octane (I'm going to look that up). Do you feel this is needed? (At about 35 gal. per tankfull with about a 10 cents per gal. difference between 87 0ctane to 93 octane, it would only be an extra $3.50 per tankfull.) What about a lead additive?
  I'm hoping to plow with the 1800 this spring with a 3-14 hyd plow. This plow will be a bit small for the 1800 but will work good on the 88. Will try to "gear up, throttle back". Looking for economy. 
  Last year a friend had his 77 and 2-14 at the plow day. He said he "turned up the gov". I'm not sure what he actually did. Started plowing around 9:00.  By lunch time he was hunting for fuel, put in 5 gal. By 2:00 he ran out of gas. 
                                                              Jim Thurnau