Kevbo 81 #26 Posted May 8, 2013 Congrats and welcome to Red Square!! You will find the most helpful and nicest folks in the world right here! I agree with cheesegrader and Don that you should make sure you run the engine at full throttle when mowing for the cooling benefits and be sure to change that hydro oil. Synthetic does make a big difference; I use Mobil 1 in my hydros. You can find original Wheel Horse tranny filters on ebay pretty cheap as well. 30W is the way to go for your Onan during this time of year. Since you are from PA, check out the links below: (available at NAPA and cheaper by the case on Amazon.com) http://www.penngrade1.com/ http://www.amazon.com/Brad-Penn009-7139-12PK-30W-Racing-Oil/dp/B009I9BVK2/ref=sr_1_4?ie=UTF8&qid=1367973686&sr=8-4&keywords=30W+brad+penn+case That's the oil I run in my tractors, pretty neat stuff Share this post Link to post Share on other sites
