I use it in my hopped up 85 mustang Gt T-tops awesome car and the oil does its job when I'm in the Hammer stay clean to

[This review was collected as part of a promotion.] We have used this in all my vehicles for the past 15+ years. Would not use anything else.

[This review was collected as part of a promotion.] We always use Pennzoil for our oil changes on all our vehicles.

[This review was collected as part of a promotion.] ...I...BUY 20/50...I GET A BETTER OIL PRESURE...TAKE TIME TO WARM...UP...YESSS...

[This review was collected as part of a promotion.] What I know is this, my dad used it, so do I, love it.

[This review was collected as part of a promotion.] Used this stuff for years and motor has 244000 and still runs like new.

[This review was collected as part of a promotion.] Every time we buy oil for our cars, We always buy this and its perfect

[This review was collected as part of a promotion.] I've used Pennzoil for years and have driven several vehicles to over 300,000 miles!

[This review was collected as part of a promotion.] I've used this oil for years and have never had a problem with it.

[This review was collected as part of a promotion.] Great product...I would recommend Penn. To everyone..