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That bolt is to drain the 4 oz. of oil in the blinker fluid reservoir. Use 75-90 weight oil to refill it. You can drain it while standing on your head. Remove the bolt above it (the filler hole) then remove the bottom bolt. Don't spill any as that is some thick oil and takes a while to spread on the garage floor before you can wipe it up.
Something sounds fishy about this... Oh, I know. You forgot to mention that he'll need LSD to refill the reservoir. (Limited Slip Differential fluid, it has many uses.)
That was great!
