Originally Posted By: KCJeep
Originally Posted By: GMBoy
Both Valvoline WB and the Castol GTX are not what they used to be. They are ok oils but nothing special by far and they both have a very low TBN so you already start "in the hole" compared to other oils. Valvoline starts with a 6.1 and GTX at 6.3..the average is 7.4 to 9. Walmart Supertech TBN is 7.6.
Just check the tests here:
http://www.pqiamerica.com/
Good point but.... I'd bet at 6k there's a good chance both the VWB and Castrol would have a higher TBN than ST. Depletion is not linear, so while starting TBN is definitely interesting for comparisons sake you can't simply judge an oil by it's starting TBN alone. If that were the case everyone on here would be running HDEO's.
You make a valid point for sure.
Originally Posted By: GMBoy
Both Valvoline WB and the Castol GTX are not what they used to be. They are ok oils but nothing special by far and they both have a very low TBN so you already start "in the hole" compared to other oils. Valvoline starts with a 6.1 and GTX at 6.3..the average is 7.4 to 9. Walmart Supertech TBN is 7.6.
Just check the tests here:
http://www.pqiamerica.com/
Good point but.... I'd bet at 6k there's a good chance both the VWB and Castrol would have a higher TBN than ST. Depletion is not linear, so while starting TBN is definitely interesting for comparisons sake you can't simply judge an oil by it's starting TBN alone. If that were the case everyone on here would be running HDEO's.
You make a valid point for sure.
