I don't drive a nascar, but my little Honda Del Sol certainly runs like a nascar when I use Pennzoil! I won't allow anything else in my buggy. I swear by Pennzoil!!!

[This review was collected as part of a promotion.] I've been using the original penzoil for over 30 years and have had great length of life in every engine I've owned. Trusted it in the '80's and trust it today for all my engine lubrication needs.

[This review was collected as part of a promotion.] I could write a long review but I'll just say I'm 54 and have used Pennzoil in everything and always will.

[This review was collected as part of a promotion.] I always use the standard yellow 5 w 30 in my chevy since break in back in 02....never had an issue with oil

[This review was collected as part of a promotion.] Pennzoil has always been a brand that I trust. I would never buy anything else! It's always worked for me, it's affordable, and does the job. I will most definitely be buying again.

We've started running this in our race engine and change the oil every four races. The conventional 20w-50 comes out looking much better and more fresh than others we have used.

I have been using this product since I purchased my Jeep in 2010 and I have had no problems at all. I will always use Pennzoil in my Jeep and any new vehicles I purchase from now on. Keep up the good work on your products.

[This review was collected as part of a promotion.] Pennzoil always has great viscosity left in the oil at the time of my oil change. A great line of products that I recommend to anyone

[This review was collected as part of a promotion.] outstanding viscosity and protection...push your engine as hard as you want and this product will not fail you.

[This review was collected as part of a promotion.] I've been using Pennzoil 40 years. At first because it was easy to find. Later because I never had internal engine issues.