Been recommended to use 20W-60 oil in my TJ

Went with the 10W40 semi synthetic and the Ryco Synthetic filter, all on special at Repco with club price.
The Castrol was the only 10w 40 recommended for the TJ all the others were not recommended?
Dont need to change yet but have it on hand cheap, pity I have to buy 2x 5L as the 1L was almost as expensive as the 5L that was on special.
Shit out on the thicker oil in the end but sure I will get flamed for going semi synth and 10w 40 not 10w 30 conventional !
It will work just fine. BUT, be prepared for flaming since Savvy didn't make the oil. LOL :ROFLMAO:
( Just a little USA inside joke, but it speaks well to "group think").

Enjoy your TJ Fishtaco! happy wheelin!