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Subject: Engine oil level

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John in Mich    Posted 03-19-2020 at 07:10:43 [URL] [DELETE]        [Reply] [No Email]  
  • Engine oil level
  • My Jubilee starts and runs great and has great oil pressure. I'm trying to figure out what is happening with my engine oil level.
    When I check it before starting it, the level reads OVER full. Upon starting the oil pressure is slow to come up but then reads 45 pounds at idle. When I shut the tractor off and check the oil, it reads at the full mark until the next day when I check it again before starting. It again shows over full.
    I suspect that the oil filter canister is draining the oil back to the pan. What is it that is not working right (besides me)?

    JMOR    Posted 03-19-2020 at 11:17:54 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • From factory, those had a rather crude anti-drain back device that can be installed wrong as in upside down. If cartridge filter has been replaced with a spin on, then be sure you are using a spin on that has anti-drain back valve. All those that will fit do not have that valve..

    Ozlander    Posted 03-19-2020 at 13:00:04 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • My NAA does that on occasion. As long as it has oil, I don't worry about it.
    Check it maybe 5 minutes after shutdown.

    John in MIch    Posted 03-19-2020 at 11:25:53 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • This has the original canister filter setup. Is there a diagram for the correct orientation of the anti-drain back? I've suspected that the filter can is draining but don't know why.

    Tim Daley(MI)    Posted 03-19-2020 at 18:05:06 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • Well, it's a FORD so will leak some oil if hasn't already so watch for puddles and eventually the dipstick will show to line.... ; > ) [GRIN] When I do an oil change on my N's I never add the full 5 quarts. I add 3 via filler breather spout then start up engine and check for leaks. If no leaks I add another quart and will run it for a few days like that then check again and add as needed. At my oil changes I also service the air cleaner and the oil bath on that and refill with fresh clean oil. At every start up I go thru a checklist of inspections before starting up and oil levels are a few.


    Tim Daley(MI)

    JMOR    Posted 03-19-2020 at 12:26:56 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • hole in flap at top

    Gaspump    Posted 03-19-2020 at 09:17:14 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • My 960 will at times will do the same thing. Years ago there was a thread on one of these boards about that. Seems many experience the same phenomenon. Make certain gas has not drained into the crankcase, if not start and run for a short time and re-check. Next oil and filter change fill with 6 qts and double check the fill mark. No one has any idea why oil wicks up the stick. My B&S powered lawn tractor also wicks up the stick at times

    John in Mich    Posted 03-19-2020 at 10:01:26 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • Interesting. I was brought up to check the oil and watch all gages. I know on our cars in the 50's and 60's, after an oil change, it would take 5 seconds or so before the idiot light would go off. AFter that they were instant.

    Gaspump    Posted 03-19-2020 at 18:58:16 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • Not sure about how high your level reads but I am talking about more than inch high on the 960 and even more than that on the B&S. Sometimes simply re-checking the level will show a correct reading on either. If not, a short run time will provide an honest reading. In my case there is more oil shown than some bleed back could cause. The B&S reading is over twice what the darn thing holds and no filter. I'm in FL, you are in MI so can't blame it on the weather.

    John in Mich    Posted 03-19-2020 at 20:57:37 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • I estimate the initial reading before startup is about a 3/4" over full.

    Tim Daley(MI)    Posted 03-19-2020 at 08:17:42 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • Oil level should be checked with dipstick on a level surface with the engine cold, not hot, and not over the fill line. A slow gauge reading could be a worn engine -when was the last rebuild? The FORD NAA Owner's Manual states the oil pressure gauge should read, at the normal operating temperature, at least 40 PSI at 1500 RPM's and not less than 8 - 10 PSI at engine idle speeds, 450 RPM's. It also states the oil pressure gauge indicates oil pressure reaching the bearings but does not show the amount of oil in the crankcase. Oil in the crankcase can become dangerously low and still show pressure on the gauge. Engine oil capacity is 4 quarts with an additional quart added for filter absorption. Keep air cleaner and breather element clean too.

    Tim Daley(MI)

    John in Mich    Posted 03-19-2020 at 09:55:46 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • Hi Tim,
    Yup, understood. Oil pressure at idle, currently about 475 rpm, is 40+, cold or hot, just slow to come up at initial start. Pressure is instant if only shut off for a break, lunch, or a nap (yes I do).
    Oil and filter are fresh and 5 quarts installed. This was occurring before the oil change. Engine is strong and no knocking.
    I have no idea when it was rebuilt. It is an aftermarket rebuilt that was in this tractor when I bought it 20 years ago.

    HCooke    Posted 03-19-2020 at 07:55:25 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • There is too much oil in the crankcase! When you measure it right after shutting down the is oil above the head which drains down slowly.

    John in Mich    Posted 03-19-2020 at 08:12:16 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • Possible. Is it possible my oil pump needs rebuild/repalce? Oil pressure is great at idle.

    HCooke    Posted 03-19-2020 at 09:47:18 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Engine oil level
  • "Is it possible my oil pump needs rebuild/repalce?"

    NO!

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