hydro oil

chevitz

chevitz

Member
What brand oil do you use to change your hydro oil? I have a raptor sd with zt 2800 pumps. the manual says use 20w50 sl/sm it doesnt say anything about synthetic or not. does anyone know what they are filled with at the factory. I ask because my overflow is empty and i want to fill it up to the cold line.
 
My Raptor is 3 weeks old, checked reservoir today and not showing and fluid. Sounds like I need to top off to cold fill with 15W-50 Mobil 1
 
Hustler Ed said:
My Raptor is 3 weeks old, checked reservoir today and not showing and fluid. Sounds like I need to top off to cold fill with 15W-50 Mobil 1
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That's what I did. filled reservoir about 1/3 full, then mowed. Next session I checked and it was completely dry. Added to 1/3 and mowed. Finally the 3rd fill all air was out and the reservoir was 3/4 full when hot, and when cooled down again was at about the 1/3 level. I think I added about a pint total.
 
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