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Customer reviews for Mobil Delvac 1300 Super Heavy Duty Premium Synthetic Blend Diesel Engine Oil 15W-40 4, 1-gallon bottles for
Mobil Delvac 1300 Super Heavy Duty Premium Synthetic Blend Diesel Engine Oil 15W-40 4, 1-gallon bottles
4.8 out of 5 stars
stars989 ratings459 reviews
  1. 5 stars92% (908)
  2. 4 stars4% (42)
  3. 3 stars2% (15)
  4. 2 stars1% (7)
  5. 1 star2% (17)

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Showing 391-400 of 459 reviews
May 12, 2023
Mim
3 out of 5 stars review

Good oil but confused

Is this conventional or synthetic blend? The label differs from the description. Please clarify the description of this product.

Helpful?71PFIMTJQYAV7192496819
Oct 5, 2019
WalmartCustomer
5 out of 5 stars review

Good oil good price

Been using this in my Cummins last few changes. Seems fine. I like the rebates. Has a solid following from diesel me mechanics. It’s name brand stuff at a good price. Works for me

Review from walmart.com
Helpful?71PFIMTJQYAV7192496819
May 13, 2012
Buck1221
5 out of 5 stars review

Mobil has always made the best oil. This one is no exception, I use it in my Motorcycle with a wet clutch system and no slippage what so ever. Price can't be beat.

Review from walmart.com
Helpful?71PFIMTJQYAV7192496819
Jun 12, 2020
Irvin
5 out of 5 stars review

Good quality at a affordable price.

This oil is excellent to have as back up. I use it for my two trucks. It is good and cheap. It is a great way to save. Specially when you buy it online and get it right on your door entrance !

Review from walmart.com
Helpful?71PFIMTJQYAV7192496819
Feb 2, 2020
alan
5 out of 5 stars review

great price my oil supplier was $5.00 a gal. more

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

Review from walmart.com
Helpful?71PFIMTJQYAV7192496819
Oct 27, 2021
floyd
5 out of 5 stars review

Try it, you will like it to.

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.

Review from walmart.com
Helpful?71PFIMTJQYAV7192496819
Sep 16, 2021
Jason
5 out of 5 stars review

The packaging does not indicate that Delvac 1300 is synthetic, however, if you visit the Mobil website this oil is a synthetic blend. Works great in my Duramax

Review from walmart.com
Helpful?71PFIMTJQYAV7192496819
May 15, 2020
Renee
5 out of 5 stars review

Great Product Fast Delivery

I ordered 18 gallons online and they were almost $3 cheaper than buying it in the store! we received it at home 3 days before we were expecting it too!!!

Review from walmart.com
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Sep 3, 2023
James P
5 out of 5 stars review

Oil

I order MANY of these cases (like 30 of them) when they were on sale, and all of them arrived just fine via FedEx. At the time of the sale, is was cheaper per gallon than buying a 55 gallon drum. Right now, it's about a buck more.

Helpful?71PFIMTJQYAV7192496819
Oct 31, 2018
DanaTeresa
5 out of 5 stars review

Mobile Delvac 1300 Super

Best Diesel engine old I have found, and I've tried them all over the past 45 years of running Diesel trucks and equipment and rebuilding those diesel engines.

Review from walmart.com
Helpful?71PFIMTJQYAV7192496819