Tried it for the first time in my 02 f250, it loves it, seems to run smoother and stronger . checked the oil later with over a 1000 miles on the oil and was still pretty much clean on the stick. LOVE IT.

can't beat the price from walmart been using mobil delvac 15w-40 in big bucket cat engines for decades 450,000 mi main and rod bearing roll out showed no wear

Can’t go wrong with Mobil products. Use the engine oil on my diesel truck and also use the 0-20 on my Honda Sedan.

Good oil and better buy then Delo. I normally like 10w30 but use this 15w40 and ad one bottle of Marvil Mystery oil.

This is a quality oil, but it is not a synthetic blend. It is a conventional oil despite what the description says.

Works a little better than Rotella...a synthetic blend would be great. I change this out once it goes over 8000 miles.

2002 ford taurus, 6 cl, engine runs good,mobil 15 - 40 helps the car runs better,engine last longer, is old car and mobil oil os good for the engine.

Very good delivery and price form Walmart. Exceptional performance with this product for 73,000 miles on my 2015 Ford F250 6.7l diesel.

I am pleased with the purchase, however the shipping was horrible. I have three gallons out of twelve arrived busted.

Shipping was fast ,,, a good product for use in my Duramax truck.