Chevron Supreme and Havoline Conventional

[BigD1]

I read read on this forum that Havoline and Chevron Supreme conventional were the same formulation just in different bottles. According to their latest product data sheets, they are not the same.

https://cglapps.chevron.com/msdspds/PDSDetailPage.aspx?docDataId=205060&docFormat=PDF

https://cglapps.chevron.com/msdspds/PDSDetailPage.aspx?docDataId=310594&docFormat=PDF

Is Chevron still making Chevron Supreme?

 

[RoadRaceJosh]

Both are on the shelf at Bi-Mart, a regional discount chain and I have purchased both at different times. The Chevron has more phosphorus and zinc and a higher base number, but the Havoline adds some small amount of magnesium. My next oil change is going to be the 5W-30 Havoline with 125ml of Liqui Moly MoS2.

 

[ExMachina]

Sometimes companies make a big deal about keeping the formulas a little different in order to be honest about the labels. I don't know why they couldn't just keep the Havoline and ChevSupreme formulas the same. Brand, marketing differentiation.
As for the Magnesium Joshua_Skinner cited, thats nothing really since almost all current motor oils use calcium sulfonate overbased detergents, and even Castrol Edge, which used to run a lot of magnesium detergents, has changed their formula to the more popular calcium compound detergents.
I do like the higher base number and higher zinc formula of ChevSupreme though, and ChevSupreme also has better cold viscosity numbers too.