Don't want to beat this to death but ... I have read that the oil level should be 3/4" +/- 1/4" (10. 5" rear end) and that overfilling will cause foaming. I checked my and found the level to be a good inch below the hole. I put a quart in it and now is at the hole level. I will be towing cross country soon and need to know if this will be a problem. What is the real answer for fluid level and will filling to the hole really cause foaming??? Thanks.