ExMark lazer z hydro fluid change

[angeloc]

My service manual calls for .Mobil1 synth for the hydro pump system. I was told the Mobil 1 has changed its blend and the new oil if choice is

Pn 109-9828​

Stuff is not cheap. Any ideas what is similar enough to use?

Exmark 109-9828 Hydraulic Oil 1 Quart Bottle Lazer Z AS E S X Z Series Vantage

Brand/MPN Exmark 109-9828 Replacement/Substituted Part Numbers MOBIL, 1-840012 Known Compatibility na

fixmytoys.com

 

[ctechbob]

Tuff Torq did something similar. For a while they were shipping with 10W-30 motor oil, and then recommending 5W50 synthetic for their change outs. Then a year or so ago they came up with their own secret sauce.

I'm going to keep on using what I can get locally and for a good price, which in my case was Mobil1 5W50.

I've also used Delvac 15W40 and it worked fine. It was a little touchy when cold, but once it warmed up it ran just fine.

 

[angeloc]

I was told a rash of recent pump failures caused a review of the company metallurgical processes and a change of compounds in Mobil1 was determined to have been the root cause. Excessive warranty work will cause serious "sales" issues

 

[MParr]

Look for an ISO 68- ISO 100 hydraulic fluid. That will work fine and reduce your cost.
Save yourself some money and use a 20W50 oil. Cut your change intervals to every 200 hours.

 

[Little_Lebowski]

Yes Mobil did change there recipe. I was told that the Kawasaki motor oil is compatible with the Hydro Gear pumps.
I use OE fluid and change every 500 Hrs. You are correct it not cheap.... Especially the filters.