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Hey y'all, I have a 2023 JD Z320R with 12 hours on her. I changed the oil and filter last week as it is the end of my season. My problem is, the manual calls for 2.2 qts of oil. I refilled with 2.0 qts, and it is way over full. I smelled it off the dip stick for gas but can't really tell if it's gas or just the oil I smell. Anybody else having this issue? TIA.......Billy

Update: I spoke with JD service dept, and he said "dip sticks don't lie" drain it down to F and let it go. He says I probably didn't get all the old oil out! I'm not sure if I agree because 1/2 to 3/4 qt is quite a large amount.

Did you change the filter as well?

Yep!

I always measure what I drain, old milk jug I marked the oz on.

sixtz4me said:

I refilled with 2.0 qts, and it is way over full.

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Have you started it up to fill the oil filter ?

Mine calls for 2.2 w/filter as well, you never get ALL the old oil out. 2 qts does mine fine w/filter.

Remember the oil is checked with the dipstick just sitting on the top of the threads; otherwise, you will see over fill.

D

7394 said:

I always measure what I drain, old milk jug I marked the oz on.

Have you started it up to fill the oil filter ?

Mine calls for 2.2 w/filter as well, you never get ALL the old oil out. 2 qts does mine fine w/filter.

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Thanks for the reply! Yes, I have started it up, and I doubt that the residual would be about a 1/2 quart.

sixtz4me said:

Thanks for the reply! Yes, I have started it up, and I doubt that the residual would be about a 1/2 quart.

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sixtz4me said:

Thanks for the reply! Yes, I have started it up, and I doubt that the residual would be about a 1/2 quart.

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Thanks! I checked it before I drained and it was full. I poured the old oil in the empty qt. bottles and got maybe a qt. and a 1/4. I'm going to drain it again and check the consistency for gas. Although, I don't know how gas could be injected into the oil.

Keep in mind, capacities are almost always stated ‘dry’. I.e no residual fluid. That’s typically 1st fill. Every now and then you’ll see see dry & service capacity stated. Not very often for small engines.

stuckinnj said:

Keep in mind, capacities are almost always stated ‘dry’. I.e no residual fluid. That’s typically 1st fill. Every now and then you’ll see see dry & service capacity stated. Not very often for small engines.

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Thanks for the reply! I understand what you're saying, but I find it hard to believe there could be 1/2-3/4 qts of residual left behind! Maybe the .2 is possible.

I hope that you are checking when the engine has sat overnight and as outlined in the engine manual. I linked to the manual above.

Nephew's stump grinder has a 35 hp Briggs Vanguard that calls for 78-80 ounces, and has always shown full on the dipstick at 64 ounces.

Many different B & S dip sticks will interchange so it is worthwhile checking the dip stick against the sump join line
On just about every vertical crank mower engine I have ever worked on the correct oil level is just above the sump joint .
So you position the dip stick in the reading position next to the tube ( note some are done up some are not ) and see where the oil level line is with respect to the sump gasket.
I have found more than 1 engine with the wrong dip stick fitted .

Just changed oil on a generator and had same problem. Said 1.6qts which way over filled it. Drained some out and it's been fine. Figured just didn't get it all out and the spec was for dry engine.

sixtz4me said:

Hey y'all, I have a 2023 JD Z320R with 12 hours on her. I changed the oil and filter last week as it is the end of my season. My problem is, the manual calls for 2.2 qts of oil. I refilled with 2.0 qts, and it is way over full. I smelled it off the dip stick for gas but can't really tell if it's gas or just the oil I smell. Anybody else having this issue? TIA.......Billy

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Had a similar issue with our snowblower, ie. gasoline leaked from the tank into the oil pan. Was told to make sure the gas tank is drained before being stored for the summer.

There is lots of reasons for different fill amounts. Even properly filled engines can initially read incorrect; unless, the engine is allowed to breathe a little. Any mechanic worth his salt will tell you that it is impossible to fully drain every engine which why have open up engines on a rimmed work bench if we are to contain the oil spilled.

As for fuel leaking into the crankcase the only real solution is to repair the source of the leakage, all others tricks are just DIYer fixes that just covers up the real problem.

sixtz4me said:

Thanks! I checked it before I drained and it was full. I poured the old oil in the empty qt. bottles and got maybe a qt. and a 1/4. I'm going to drain it again and check the consistency for gas. Although, I don't know how gas could be injected into the oil.

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Anytime the fuel tank is above the carburetor you can definitely get gas into the oil through leaking float/needle valve. Very common problem, can also cause hydro-lock. Have had both problems with all types of engines, differing equipment, even fairly new. Install a fuel shut-off valve in-line before the carb and make sure you use it every time you shut off the engine.

Well I can add I always tip / angle machine so oil drain hole is at the lowest point & let it drain over nite after a long run so oil is hot when draining out this might help ? as I did this with my PU truck few hours later put tray away to put in waste barrel did not need the truck for a few days & would not believe how much oil was in my clean garage floor !! lol hope this helps ?

ss63 said:

Well I can add I always tip / angle machine so oil drain hole is at the lowest point & let it drain over nite after a long run so oil is hot when draining out this might help ? as I did this with my PU truck few hours later put tray away to put in waste barrel did not need the truck for a few days & would not believe how much oil was in my clean garage floor !! lol hope this helps ?

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Now wait a minute. Isn't a clean garage floor a sign of a sick mechanic? Just kidding.....The last time I saw my garage floor clean was when it was new. Though I am planning on coating it so I can clean up my messes if I ever get everything out.

vintagefred said:

Anytime the fuel tank is above the carburetor you can definitely get gas into the oil through leaking float/needle valve. Very common problem, can also cause hydro-lock. Have had both problems with all types of engines, differing equipment, even fairly new. Install a fuel shut-off valve in-line before the carb and make sure you use it every time you shut off the engine.

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I have ALWAYS done that with my machines (turning off the gas and letting it run dry) and NEVER had issues restarting!

hlw49 said:

Did you change the filter as well?

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I found exactly the same thing last year with my Bad Boy. It says full so it was fine with me. No issues over the mowing season.

sixtz4me said:

Hey y'all, I have a 2023 JD Z320R with 12 hours on her. I changed the oil and filter last week as it is the end of my season. My problem is, the manual calls for 2.2 qts of oil. I refilled with 2.0 qts, and it is way over full. I smelled it off the dip stick for gas but can't really tell if it's gas or just the oil I smell. Anybody else having this issue? TIA.......Billy

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There is probably no oil in the filter unless you filled it before you put it on the engine. That is probably the difference.

You have to start the engine and fill the filter.

sixtz4me said:

Hey y'all, I have a 2023 JD Z320R with 12 hours on her. I changed the oil and filter last week as it is the end of my season. My problem is, the manual calls for 2.2 qts of oil. I refilled with 2.0 qts, and it is way over full. I smelled it off the dip stick for gas but can't really tell if it's gas or just the oil I smell. Anybody else having this issue? TIA.......Billy

Click to expand...

sixtz4me said:

Hey y'all, I have a 2023 JD Z320R with 12 hours on her. I changed the oil and filter last week as it is the end of my season. My problem is, the manual calls for 2.2 qts of oil. I refilled with 2.0 qts, and it is way over full. I smelled it off the dip stick for gas but can't really tell if it's gas or just the oil I smell. Anybody else having this issue? TIA.......Billy

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As I said before, you need to start the engine to fill the filter. Then you have to wait to let the oil settle. Many times the oil sticks to the fill tube and the dip stick will pick up oil off the fill tube sidewalls showing over full. It settles faster if the oil is hot. Let it set for 5 mins or more and wipe the stick a few times to make sure you are measuring the oil in the crank case and not the oil clinging to the fill tube. The best time to check oil is when the engine is cold, before you start it.

7394 said:

I always measure what I drain, old milk jug I marked the oz on.

Have you started it up to fill the oil filter ?

Mine calls for 2.2 w/filter as well, you never get ALL the old oil out. 2 qts does mine fine w/filter.

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Ii do that with oil, trans fluid etc. Makes sure you have the right amount and also helps you see how much was lost if you wrote down what was put in.