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Its pretty thick oil, you don't want to suffer a cold start problem with oil that thick.
Stick to 5w40 or 10w30 or 5w30, it was just on sale here, and I had a look and put it back, I need cold start capability as I bet you do as well in Wisconsin.
It didnt come with one. And thank you all. Im just gunna use 5w-40 rotella. Lol u can use the 15-40 in a grand prix GTP but I wasnt sure about the 1UZ. Thank you all
You can log on to the Lexus web site and request a (free) owner's manual.
You can also download PDFs if you like.
.....or you can call customer service and request a free owners manual and some other manuals as well.While you're there give them your VIN number and see if there are any outstanding recalls or service campaigns for your LS..1-800-255-3987.Good luck.