*%$#&^* Oil Filter

Just pulled the oil filter for that one that just put the solenoid shift starter on and the filter on it was loose. I know for a fact that the filter was installed at the proper tightening amount because I did it myself last spring.. Wasn't leaking yet put would of occurred in the near future. Put it on this time with the gasket contact mating surface and then one complete turn so we will see what happens.
 
When I reinstalled the filter that started this thread, I used a wrench. I may have to remove the engine to get the filter off, but that's still better than a destroyed engine.
 
This just happened to me Saturday, no warning whatsoever. Running fine, shut mower off to do some other things, then came back to do some more work and engine was locked up solid on my Cub Cadet XT1 LT with 7000 series KT725. Don't understand what point there is having an oil pressure switch if there's not an audible warning (I don't have the optional information panel) or auto shut down. Opened the hood and oil filter was covered with oily dirt and dust as was the frame below it, none of that is visible with the hood shut. Oil filter was a full 3/4 turn or more loose. Pushed mower into my shed, pulled plugs and put 2 full squirts of oil in each cylinder then reinstalled plugs just shy of fully seated. Good thing mowing season is done for me.

I've been wrenching engines over 55yrs and have never had a properly installed oil filter, on anything, loosen on it's own before. Pretty dang disgusted.
 
Synthetic and natural rubber are two different beasts. I now tighten all oil to 8 ft-lbs (96 in lbs) or 100 in-lbs depending which torque wrench I am using at the time.
 
I ran into oil filter problems with a Toro/Loncin 708cc engine. The filter was a WIX. I looked at Predator's (Loncin) advise about oil filters. They recommended STP S4967 or FRAM 4967 as acceptable aftermarket applications. I observed the difference between the STP, FRAM, and WIX filters. The WIX had a convex shaped base plate. The FRAM and STP had a concave shaped base plate. The problem with the WIX is that the base plate of the filter would contact the filter mounting flange before the gasket could fully seal. I never used another WIX on the Loncin engine.
I've never had a problem with filters loosening or sealing on my Kohler ZT740. I don't use Kohler oil filters. I use MicroGard Select MSL 51348 or Carquest Premium 85348 on my Kohler. Yes, the base plate is concave . I tighten by hand.
Check the shape of the filter base plate.
 
PhilC said:
This just happened to me Saturday, no warning whatsoever. Running fine, shut mower off to do some other things, then came back to do some more work and engine was locked up solid on my Cub Cadet XT1 LT with 7000 series KT725. Don't understand what point there is having an oil pressure switch if there's not an audible warning (I don't have the optional information panel) or auto shut down. Opened the hood and oil filter was covered with oily dirt and dust as was the frame below it, none of that is visible with the hood shut. Oil filter was a full 3/4 turn or more loose. Pushed mower into my shed, pulled plugs and put 2 full squirts of oil in each cylinder then reinstalled plugs just shy of fully seated. Good thing mowing season is done for me.

I've been wrenching engines over 55yrs and have never had a properly installed oil filter, on anything, loosen on it's own before. Pretty dang disgusted.
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Two hands, a shop towel and a grunt, to tighten oil filters. Never had one back off on me. However, have seen many that are loose when changing oil, and a few that destroyed the engine because not installed tight enough.
 
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