With my new "Freedom Z" with the Kohler 7000 Series 22 hp (KT725) owners manual says any of the new oils w/detergent even synthetic oil can be used. Has anyone tried synthetic such as Royal Purple? What are your thoughts on this?
Oil subject will nevery die. Early on in this foum I argued that non synthetic will cool just as well and met strong resistance. I still believe that , but the coupons for oil at 59 cents /qt disappeared so now I just put 5W-30 synthetic in my Intek out of ease of access (use it in my Nissan). It uses a little but otherwise happy. I always check level before starting and , of course, monitor the oil pressure gauge (50 psi startup, 35-40 hot run) and oil temp gauge. It has been documented that thin oil cools better. (OK I am now running from the mob sure to chase me):smile:
You wont get resistance from me, I agree. I use Mobil Super 5000 10w30 and have for years and never had any oil related issues and I've run it in Kohlers, Kawasaki and Honda Engines. Just change every 50 hours with filter and you wont have any problems.