if you can't tighten a wheel bearing to 0 end play with your fingers you have other problems like dirt or bunged threads .
I also have big fingers .Jimscuda got it right .
a 1 minute ohm test will tell you without a doubt if your sending unit works or not or buy some chinease junk if you feel thats the best option . to test your gauge ground out the wire your gague should go to full just
do an ohm test there are many threads on this . aftermarket units are hit or miss mostly miss . also check your voltage limiter many threads on this also .
use whatever you want but if you don't want to spend a small fortune rotella t is the best value and proven and used by hundreds of members . it has enough zinc in it . no additives needed to much zinc is also not good
i was looking to get my ralley dash rechromed and was quoted 8 months to 1 year turn around and you could easly not get the same piece back.if leanna is thinking about rechromeing plastic i will wait and get her.
remember ss springs are 2 diff part numbers one for right and one for left side not sure of the number but just do a search on here. i had a guy try to sell me some sss that were not sss so be carefull
i run a 325 50 15 on a 70 duster with superstock springs springs are relocated 1 inch in and not sure of back space but will find out i have no issues running these i will get some pics as soom as i find out how