It wont be missed, I'm loving my kirkland 5w30 synthetic for cheaper then most group 2 oils, like 3 bucks per quart bought on reoccurring monthly sale at costco. TBH 100%, I have never seen any oil that stays this clean on the dip stick, it reminds me of old qsud when they were trying to stay light amber and showing it with clean bottles. It does make me want to get a uoa on it to see how the visc holds up. No I'm not saying it is better then every oil out there, just saying I am impressed with the latest specs taking everything out of the oil, I'm not sure in 5w30 you can do better with api shelf oils. If not for what had going on with my hemi, I would be fine with running kirkland plus biotech in my truck.