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4.6 out of 5 stars. 168 reviews
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Mobil 2.5 gal. 5W-40 Delvac 1 ESP Heavy-Duty Full Synthetic Diesel Engine Oil

Mobil 2.5 gal. 5W-40 Delvac 1 ESP Heavy-Duty Full Synthetic Diesel Engine Oil

Item # 148529999

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Image showing Mobil Mobil 2.5 gal. 5W-40 Delvac 1 ESP Heavy-Duty Full Synthetic Diesel Engine Oil
Image showing Mobil Mobil 2.5 gal. 5W-40 Delvac 1 ESP Heavy-Duty Full Synthetic Diesel Engine Oil


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Mobil 2.5 gal. 5W-40 Delvac 1 ESP Heavy-Duty Full Synthetic Diesel Engine Oil

Item # 148529999

Stocked & Ready
Image showing Mobil Mobil 2.5 gal. 5W-40 Delvac 1 ESP Heavy-Duty Full Synthetic Diesel Engine Oil
Image showing Mobil Mobil 2.5 gal. 5W-40 Delvac 1 ESP Heavy-Duty Full Synthetic Diesel Engine Oil

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Grassland (franklin) TN

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Mobil Delvac 1 ESP 5W-40 is an advanced synthetic heavy duty diesel engine oil that helps extend engine life while providing long drain capability and potential fuel economy for modern and latest diesel engine technology operating in severe applications. This product is formulated to deliver exceptional performance in modern and older, hard working, engines, including those with emission control systems. Mobil Delvac 1 ESP 5W-40 is recommended for use in a wide range of heavy-duty applications and operating environments found in the on-road transport and off-road mining, forestry, construction, and agricultural industries. The outstanding performance of Mobil Delvac 1 ESP 5W-40 is the result of extensive cooperative development work of ExxonMobil with major equipment builders and application of the latest lubrication technology. As a result, this product meets or exceeds the requirements of the latest API and ACEA industry specifications for diesel engine oils, as well as the requirements of many major American, and European engine manufacturers. Please refer to the owners handbook for OEM application requirements and oil drain intervals for your vehicle or equipment. Compared to an SAE 15W-40 engine oil. Actual savings are dependent on vehicle engine type, outside temperature, driving conditions, and your current engine oil viscosity. Mobil Delvac 1 ESP 5W-40 is an outstanding lubricant solution for modern and latest engine technology equipped with emission after-treatment. It was developed by ExxonMobil to maintain unsurpassed oxidation stability while also delivering exceptional low temperature fluidity and pumpability for smooth starting in cold down to -35°C. This feature, in combination with the sophisticated additive system, ensures exceptional engine wear performance and supports long engine life. The low ash formulation protects at the same time all exhaust after-treatment devices to maintain cleaner air requirements. The advanced engine cleanliness performance prevents deposits and keeps the engine running like new for long and efficient engine life. Based on PC-11 industry test data.

Looking for more information on truck accessories? Check out our guide on truck accessories in the product documents section.

  • Excellent low temperature pumpability. Reliable engine start and wear protection at low temperatures
  • Step out wear protection. Reduced engine wear to promote long engine life
  • Unsurpassed oxidation stability. Long oil drain intervals and prevention of deposits
  • Superb resistance to corrosion. Protection of critical engine surfaces in humid environments
  • Recommended by ExxonMobil for use in : Most engine generations up to latest and most sophisticated high performance diesel engines with turbo-charger, direct injection and low emission designs, featuring all types of exhaust after-treatment technology
  • Recommended by ExxonMobil for use in : On-highway engines operating in both high speed/high load and stop-and-go conditions
  • Recommended by ExxonMobil for use in : Off-highway engines operating in severe low speed/heavy load conditions
  • Recommended by ExxonMobil for use in : Most diesel powered equipment from American and European equipment builders
  • Recommended by ExxonMobil for use in : High performance gasoline engines and mixed fleets
  • Recommended by ExxonMobil for use in : Refrigeration units

Q&As

1 - 6 of 6 Questions

Q: What stores in Oregon have the Mobil Delvac Diesel full synthetic in stock in the 2.5 gallon size?

4 years ago
1 Answer
  • A: This item is currently only available online.
    4 years ago
    Helpful?

Q: Hi I’m looking diesel oil mobile 5w-30

5 years ago
1 Answer
  • A: Unfortunately we do not have that available on the TS website.
    5 years ago
    Helpful?

Q: What is the recommended intervals for oil changes with this oil? I have a 2005 Dodge Ram 3500 with a 5.9 Cummins Diesel

5 years ago
1 Answer
  • A: Please refer to the owners handbook for OEM application requirements and oil drain intervals for your vehicle or equipment.
    5 years ago
    Helpful?

Q: I have a 2012 Via RV. It has a Mercedes Benz v-6 Diesel engine. MB Sheet 229.51. It uses  Mobil 1 fully synthetic oil 5-w 40. This product has the word Delvac. Does this matter? What does Delvac mean. Thanks. Luis

5 years ago
1 Answer
  • A: Thank you for your question! Devac stands for Diesel Engine Lubricant VACuum oil.
    5 years ago
    Helpful?

Q: Do you have 5 gallons bucket of mobile delvac 1 ESP havey duty full synthetic 5w-40

5 years ago
1 Answer
  • A: Thank you for your question! This is the only gallons we sell for this product.
    5 years ago
    Helpful?

Q: Is this oil for 2015 Mercedes Sprinter 2.1 liter engine?

5 years ago
1 Answer
  • A: This is the absolute “BEST” oil fir use in all Diesel engines. As a full synthetic it lowers engine wear to almost zero and provides the best mileage. Our 2018 Chevrolet 3500 gets over 20 mpg highway and it weighs in at over 8,000 lbs.  And best of all, Tractor Supply has the most reasonable price.
    5 years ago
    Helpful?

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Reviews

Rating Snapshot

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142 reviews with 5 stars.
13 reviews with 4 stars.
0 reviews with 3 stars.
1 review with 2 stars.
12 reviews with 1 star.

Overall Rating

4.6
45 out of 46 (98%) reviewers recommend this product

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Summary of Reviews

AI-generated from customer ratings & reviews, and may include incentivized reviews.
The provided diesel engine oil is highly regarded for its excellent performance, protection, and reliability across a wide range of diesel engines. Customers report it helps with easy starts, smooth operation, and extended engine life, particularly in cold weather conditions. Many long-term users ex...
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5 to 34 of 168 Reviews .
1 – 30 of 168 Reviews
Review 1

Winter Oil Change

9 months ago
A few fresh gallons for a quick oil change. This old engine could tell the difference.

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Rebate

9 months ago
Very Slow to receive the mfg rebate as compared to shell.

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Mobil

10 months ago
I always buy this brand as feel it is a top quality product.

Originally posted on mobiloil.com

Review 1

Mobil Delvac 1 ESP 5w-40

10 months ago
One of the best diesel oils made, if not the best for my 2022 6.7 powerstroke.

Originally posted on mobiloil.com

Review 1

Premium Quality & Pricing

10 months ago
Great pricing and rebate available. Haven't used this pail yet, but it is due soon. Follow up on the rebate - my submission was approved and then rejected two weeks later. A phone call hopefully fixed that, but we'll see...

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Decrease your friction

a year ago
Great lube for those heavy friction jobs. Definitely should help with the longevity

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Gas small engine protection

a year ago
Excellent oil for my expensive gas engine powered lawn cutting equipment.

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Mobil

a year ago
It's very good , nice and important Thank you very much.

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Good Oil for Diesel Truck

a year ago
FANTASTIC oil for my DIESEL TRUCK. I change it every 7500 miles.

Originally posted on mobiloil.com

Review 1

Extended Drain Intervals!🙌

a year ago
Love the long drain intervals. Use in all my rigs including my 1.9 TDI, 7.3 Powerstroke, & 6.9 idi.

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Great product with reliable performance.

a year ago
Great product! I trust it for all of my diesel equipment.

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Great oil

a year ago
Great oil Makes starting in below zero weather easier

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

It’s Mobil

a year ago
Have always been a fan of Mobil products. Have used the Delvac line for decades. I don’t know for sure, I’m not Imprint certain but I’m sure the ESP will help my 6.7 Cummins engine and emissions last longer.

Yes, I recommend this product.

Originally posted on mobiloil.com

Firth, NE
Reviews 4

Great oil at a good price

a year ago
I run it in my truck and tractor. It's a very good diesel oil.
SweepstakesYes

Yes, I recommend this product.

Review 1

Great Product.

a year ago
Been using this for all my Duramax oil changes for 5 years. I wouldn't change.

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Great for power strokes

a year ago
I use Mobil oil in my vehicles because it offers superior engine protection, enhances fuel efficiency, and ensures smooth performance. Its advanced formulation helps reduce wear and tear, prolonging engine life. Mobil oil also provides excellent thermal stability and resists breakdown, making it reliable under various driving conditions. Overall, it contributes to the longevity and reliability of my vehicles

Originally posted on mobiloil.com

Review 1

Great oil

a year ago
Mobil oil is renowned for its superior performance and protection. Formulated with advanced additives, it effectively reduces engine wear, enhances fuel efficiency, and maintains optimal viscosity across a range of temperatures. Trusted by both consumers and professionals, Mobil oil promotes engine longevity and reliability, making it an excellent choice for various vehicles, from everyday cars to high-performance engines.

Originally posted on mobiloil.com

Review 1

I run Mobil Delvac 1 in all my diesel engines.

a year ago
We are using Mobile Delvac 1 in all our diesel engines, from our 450 HP Cummins Motorhome engine, to the engines in my 2004 and 2014 F350. We oil sample them - and could use longer run times, but I like to be well within the limits of the oil on these expensive motors

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Killer HD Oil

2 years ago
My favorite oil to use in the armored Komatsu dozer. They gonna learn today.

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

The very best for my tractor

2 years ago
I choose Mobil Delvac 1 because I have found that it is the very best money can buy for my tractor. I have a 48 horsepower TYM T474. I decided to try Mobil Delvac 1 in hopes that it would run quieter, smoother and cooler. Delvac 1 did not disappoint. I’m thoroughly impressed by the results and will use Mobil Delvac 1 from this point forward. I have used Mobil 1 in all of my other vehicles for years and now my tractor is happy too.

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Quieter running

2 years ago
I've used Mobil synthetic oils for many years. this makes my Ram diesel quieter with less valve train noise then other brands I have tried.

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

They need the money more than me, I guess

2 years ago
They won’t honor the rebate which I qualify for. I’ve read it over and there is no reason I don’t qualify

No, I do not recommend this product.

Originally posted on mobiloil.com

Review 1

Farmer

2 years ago
I've used this for several years in skidsteers and utility tractors as well as my pickup. It works well and everything starts very well in the winter.

Yes, I recommend this product.

Originally posted on mobiloil.com

Florida
Review 1

Mobil 1

2 years ago
Great product. Good price
Review 1

All about the rebates!

2 years ago
I do frequent oil changes in my vehicles and the rebates help offset my maintenance routines.

Yes, I recommend this product.

Originally posted on mobiloil.com

Vermont
Review 1

DELVAC 1 GREAT OIL

2 years ago
I have used this oil in both my motorhome with a cat engine and my old Duramax and current Duramax with great results and no problems. The 10 Qt size is perfect for Duramax refill. Priciyis hood as well.
SweepstakesYes

Yes, I recommend this product.

Review 1

Use it consistently.

2 years ago
Have been using it since I got the vehicle. Seems to work well with no issues.

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Premium Cold Weather Performance

2 years ago
Premium Product Performance for our Diesel Engines in cold Weather

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Da*n Good

2 years ago
The only oil to use in ND when the temperature drops

Yes, I recommend this product.

Originally posted on mobiloil.com

Review 1

Protect your investment

3 years ago
Above and beyond motor oil, modern diesel engines are tough on oil.

Yes, I recommend this product.

Originally posted on mobiloil.com