Thanks to Frank and DZZippy for your response. I am not at my RV now, it is in storage since last fall, so will see if I can find a part # on the dipstick that I can't get back in when I again have access to it. I am thinking that the surest way to get a good fix is to somhow take the old one off and have it in hand when looking for a fix or replacement. Unless I can get to it from underneath the coach I will most likely have to take enough of the hardware off that is in the way to get to it from the back of the coach. Thanks for your input and resource information...... it should help. I am currently in Mexico without the coach, so will have to wait until sometime this summer get this done.