Thanks for the manual. I found that one but wasn't sure that it was correct since it shows 310 not 314. I did see 166768 in there so was hoping it was right and you've confirmed that.
I sprayed some penetrating oil on the plug last night even though it looked clean so that I would hopefully not have an issue when I break it loose this weekend. You are saying that when I drain the existing oil the bypass should be disengaged (in the driving position) when I top things off. I'll check the depth before but I'm pretty confident it has to be low since on a downhill angle it was way worse meaning (I hope) that the fluid was running away from the components. Topping it off would probably be sufficient but it seems like new lubricant every 23 years is reasonable. Also gives me a chance to see if there's any crud I should be concerned with.
I sprayed some penetrating oil on the plug last night even though it looked clean so that I would hopefully not have an issue when I break it loose this weekend. You are saying that when I drain the existing oil the bypass should be disengaged (in the driving position) when I top things off. I'll check the depth before but I'm pretty confident it has to be low since on a downhill angle it was way worse meaning (I hope) that the fluid was running away from the components. Topping it off would probably be sufficient but it seems like new lubricant every 23 years is reasonable. Also gives me a chance to see if there's any crud I should be concerned with.