Tim, what do you think about this?

Read this on another board. Is it true?

[i:5e0e3ae38a]A side note about hyd oil levels in 20-30-40 series deere, you can overfill way over with no problems. We ran a 4020 on a hot workout and top notch deere tech said to just add five extra gallons of hyd oil to improve heat tolerance, same thing for a 30 series, had one that leaked and didn't have the option of fixing leak at that time, overfilled by five gallons and let it leak down to add, and added more. [/i:5e0e3ae38a][i:5e0e3ae38a][/i:5e0e3ae38a]
 
I worked on a 4020 power shift years back that labored in 8th gear. after all the pressure checks and head scratching --- it was 5 gal over full
 
Not true. As others stated will cause overheating. They were not meant to run under oil.
 
I have a 4020 power shift that Tim is a little
familiar with, and it was over heating the trans.
oil. Also, not shifting like it should. I drained
the oil down to the full mark and it was fixed. I
had several John Deere experts tell me, Tim was one,
you can't run it over full. They were right. I also
have some IH tractors. You can run them over full.
 
I have not nearly the same amount of experience on the 20 series as Tim S has but I have certainly seen the same symptoms on 7xxx series tractors. If you have 4-5 extra gallons of oil in the rear end you will feel like the tractor on it ownn is pulling a railcar down the road.I have seen them get overfilled because the operator looked at the sight glass when the tractor was running or had just been shut off and taken a "false read" of the actual oil level.
 
There are all kinds of different ideas on here and the discussion part is what irons them out...that and true life adventures...
 

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