Is Rotella 5w40 CJ4 oil group III, IV or a blend of the two? Also, if it's group III, can it be used for the AutoRX clean and rinse phases or is group II oil still preferred?
Thanks,
Rob
-- Edited by BoiseRob on Sunday 3rd of May 2009 01:23:03 PM
-- Edited by BoiseRob on Sunday 3rd of May 2009 03:03:08 PM
You should be able to go to the Rotella website and be able to check out if the oil is a Group II oil, I think it is best to use Wal-Mart Super Tech dino oil for both phases.
Yep. RTS 5w-40 uses Shell's XHVI proprietary Group III base stock. The only reason you would NOT want to use it is if you feel you can use a cheaper product (like a 15w-40) for the short time you're going to have it in service.
I'd use RTS 5w-40 if I was nervous with a BMW/MB/AUDI/etc (Euro-alloy that typically spec's a 5w-40 synth). I wouldn't worry about the ACEA alphabet soup numbers, nor the lack of VW501.xx/MB229.xxx.xxx.xxx or any of the other stuff, since you're not taxing any of the fuel economy or other non-durability criteria that those oils have to meet.
That all said, I would have no problem using a 15w-40 in my BMW/MB/AUDI/VW since I'm not the nervous type.
