10w30 valvoline maxlife vs. castrol high mileage

[theduck]

Have a 99 grand prix 120k miles, slight oil leak, used mobil high mileage.
Want to try something else to combat oil leak. What has better results of
the two valvoline maxlife or castrol high mileage. Normally 4-5 k oci.

 

[aquariuscsm]

Maxlife seems to be the holy grail. I've thought about trying it myself for the add pack.

 

[buster]

MaxLife.

 

[Brule]

FWIW, Castrol HM did nothing in my civic. I'll be trying MaxLife myself soon.

 

[KCJeep]

I've used both a bunch, I consider Maxlife the superior lube, definitely what I would try first.