I purchased a Grant Wooden Steering Wheel which is "walnut." I assumed it was going to be "Black Walnut" but when it arrived it appears to be "English Walnut" which I questioned, (I managed a Black Walnut Sawmill for 30 years, like the Lexus wooden steering wheel - ours). I questioned if it even was walnut but a major question was because of it's softness (English should be harder than Black). In any event, did not like the color so I stained it "dark walnut" it with an oil based stain. Looks good but could look better but now "it is what it is." In any event, I now want to put a finish on and I have researched many finishes from Tung Oil, Teak Oil, French Polish (actually a process), Hand Rubbed Wax, etc. The finish has to exterior and stand up to heat and sun since it is for a convertible located in Arizona. Worst case, cover it when just joy riding and uncover for events. Has anyone done this, what did you use, how did you apply and how did it stand up. I am leaning towards and exterior Tung Oil. Thanks.