The filter you bought at Walmart was it for hydraulic oil.:waving:

 

Yes, I crossed-reference the scag filter and got a hydraulic oil filter

 

Air must have entered the system what hydraulic oil you used

 

When I put the old scag filter on, the mower started moving. Why would the new oil be milky?

 

When I put the old scag filter on, the mower started moving. Why would the new oil be milky?

When you removed the new filter was it full of oil and was it milky

 

It was full of oil and was a little milky

 

It was full of oil and was a little milky

For sure you left some old hydraulic oil in there. Moister and heat makes oil get milky color. Your new oil filter must be defected go get one at the dealer you will see your problems go way:waving:

 

When I change mine I'll jack it up and run the wheels back and forth to purge the air, I know you filled that filter up before you installed it .

 

If my old oil was not mikly why would it be milky and foamy now?

 

You got air in it. And there is no way you can get all the old oil out. When I changed mine to 15x50 Mobil 1 I changed it then ran it then changed it again. I wouldnt run anything but syn in it. And Mobil 1 at that but thats just me. I have run it in GrassHoppers, Scags and just about every hydro system I have owned and NEVER had any trouble.

 

Thank you. I am hearing good things about Mobile 1. How about filters other than OEM Scag?

 

I run Mobil 1 full synthetic oil in all of my hydro's. Just make sure that you get a hydro filter and not a regular oil filter. It doesn't have to be the scag oem it just has to a hydro filter.

Was the oil actually milky or was it just frothy. If it was frothy then it had air in system. If it was milky then you had moisture. It sounds like your problem might have been caused my the cheap oil and filter. Just drain the oil, replace with mobil one and a good filter. Then bleed the air out of the system by raising up the drive wheels and running them between forward and reverse for a few minutes. You dont have to drain all of the old oil out of the system unless it contaminated to start.

 

Air is getting in somehow,did the rubber gasket from the old filter stick to the mower. Might need an oem filter.

 

You just had air in the system. I always fill the new oil filter with oil before I put on. It helps prevent an air pocket.
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