This is my first time trying RLIs products. This is a 50/50 blend of the Biosyn HD CJ-4 10w30 and 15w40 + 2% (4oz) of the booster pak. I sent in a VOA last year for a baseline. Here is the thread: https://www.bobistheoilguy.com/foru...
I fuel this truck mostly with Renewable DIesel. All but 2 fill ups were the Propel HPR product sold only here in CA.Truck has given an average of 23.8 combined MPGs on this OCI. This fuel burns extremely clean and the oil takes quite awhile to get dark when changed. My truck has all emissions system intact and is still under warranty.
Where is the Manganese coming from? It's not present in the VOA and other wear metals are low so I don't think it's related to wear. Does anybody have a guess?
I also started using a new diesel fuel additive, mixed @ 400:1 and wondering if it contains a manganese compound. Since there is 2% FD it seems likely but I'm cluless!
The magnesium discrepancy is residual from Delvac,
Filter is OEM AcDelco. Ran 400 miles past reaching 0% on the OLM.
Did some moderate towing/hauling at the end of the OCI. 5k Lbs for about 300 miles.
What I like about this oil:
Strong oil pressure. Even after 7600 miles, shearing to a 30wt and had ~ 2% FD, I still had 20 PSI at idle which is better than fresh Delvac 5w40.
No top end noise at startup like with Delvac.
Low consumption. Consumption was less than 1/2 a quart.
Low wear numbers.
What I don't like:
Cost. Kinda expensive. $60 per oil change.