Diesel Engine Maintenance Tip: When to Change Your Oil

By Product Expert | Posted in Commercial, Dealership Information, Tips & Tricks on Tuesday, August 22nd, 2017 at 8:00 am
How Often Should I Change the Oil of My Diesel Truck_b

How Often Should I Change the Oil of My Diesel Truck?

Although it often seems like a hassle, regularly changing your oil is incredibly important to the life of your truck and its engine. And since we all depend on our trucks day in and day out, we need to make sure we’re doing everything possible to keep them maintained, serviced and running at an optimum level. That leads many to ask, “How often should I change the oil of my diesel truck?” The answer depends on multiple variables, so let’s take a closer look and find out.

[ READ MORE: How Much Can a 2018 Ram 3500 Tow? ]

Oil Change Intervals for Diesel EnginesMechanic changing oil_b

Like we said, the oil change intervals for diesel engines vary considerably. Your best bet is to simply read your owner’s manual and follow what it says. You’re also going to want to keep a number of other factors in mind as well. Most diesel engines should have their oil changed about every 3,000 miles if you’re using standard oil and every 5,000 to 6,000 miles if you’re using full synthetic oil. Sometimes that interval can be raised to as high as 10,000 miles if you’re using the absolute highest quality synthetic oil formulated specifically for diesel engines. But those intervals will have to be cut back a thousand miles or so if you’re working your truck hard each and every day. That means if your truck is the hardest worker on your job site, towing and hauling anything and everything you need it to, you’re going to want to adjust your service intervals and get oil changes a little more regularly. Always remember – there’s no such thing as changing your oil too often, but there are a lot of risks that come with not changing it often enough.

If you have any questions, please contact the certified technicians in our Fury Ram Truck Center Service Department in Lake Elmo, MN. You can also schedule an appointment online.

12 Responses to “Diesel Engine Maintenance Tip: When to Change Your Oil”

  1. Cotar Olson says:

    Oil change is a basic and important maintenance of a vehicle. But it will become more tricky in diesel engine. Your best bet is to simply read your owner’s manual and follow what it says. Most diesel engines should have their oil changed about every 3,000 miles if you’re using standard oil and every 5,000 to 6,000 miles if you’re using full synthetic oil. If you’re using the absolute highest quality synthetic oil formulated specifically for diesel engines then change oil in every 10,000 miles. Contact for a diesel engine car mechanic to get best performance of your vehicle.

  2. Ivy Pearl says:

    I am glad to read the comprehensive information given in this article about the diesel engine maintenance. The engine of the vehicle is the most expensive component of the vehicle. So, regular maintenance of such component is really essential to keep the engine in working order. Use of burned engine has a significant impact on the health of the engine. So, replacement of burned oil is really essential to keep the engine in working order.

  3. Well written article on changing engine oil. It’s a energetic part of keeping your car’s engine running well. The role of engine oil is to keep the internal parts of your car’s engine lubricated and cool. It keeps the moving parts from grinding against each other causing wear and damage.

  4. Mark Murphy says:

    I really appreciate your reminder of how there are no downsides to changing your oil too much in your diesel engine. My wife and I have been thinking of getting a new car for our son, and we want to make sure that if he gets a diesel engine that it is getting taken care of. I will be sure to tell my wife that we should try and tell our son that he should err on the safe side and change his oil frequently!

  5. Gary Lorandini says:

    If this site is saying at max 10,000 miles , than why would Ram put in their service manuals every 15,000 miles .

  6. Thanks for explaining that we should read the owners manual to help us figure out when to change the oil. I want to help my husband prepare to get a diesel fuel truck soon. I’m glad I read your article because now I can offer him some helpful tips about taking care of it!

  7. jovi says:

    In response to Gary Lorandinni:

    The owners’s manual suggest that oil change interval should be every 15,000 miles. This article accounts to different use of the vehicle, wether its for towing, city stop & go driving or recreational use. The fact is that every diesel engine owner drives their vehicle for different purposes, and not every one drives in the highway on regular basis; these factors must be considered aside from user’s manual “recommended” oil change intervals. I personally change my oil every 5000 miles. One time, I let it go up to 15,000 miles and noticed a very hot engine temp on normal driving condition without load. When I change the filter, the mechanic forgot to install the rubber seal in the filter, and overtightened my oil plug nut (70 ft/lb). I used full synthetic diesel oil ($29.99/gal) 15w/40 x 3 gal with Mopar filter ($14.00) Torgue spec for plug is indicated on the plug rubber seal, which is 35ft/lb. No problem so far, oil temp stays on 187-200 avg (85-100 deg F).

  8. I am based in the UK near Chester, England and would like to add comment about oil changes and also diesel fuel. My current Mercedes long wheelbase S-Class (Diesel) was factory ordered in 2014 and has now covered 312,500 miles (502,920 km). The S-Class is business use only as a Chauffeur car. The average service interval is 15,500 miles but since new the oil & filter has been changed every 7,000 to 8,000 miles as was also the case on my previous 2 S-Class. The engine still running sweetly and doesn’t sound like it has done such mileage. Mileage has been a mix of long and short distance travel. Apart from the oil change discipline the other key factor is to only use highest quality diesel fuel which in my case is Shell V-Power Diesel or BP Ultimate Diesel. Torque Converter still the original probably because Gearbox Oil change discipline adhered to (4 changes to date). Apart from the usual service part replacements it has had Control Arms & Torsion Bars etc under the front end renewed and also the Turbo unit at 206,890 miles. Never been off the road except for pre-planned services and parts renewal. External bodywork and the interior still looking tip-top. Here’s hoping for many more miles!

  9. Don Robbins says:

    Thanks to everyone for your comments on Engine Oil for a Diesel Engine! I can’t find my Owners Manual so I’ll just guess at it.

  10. Jeremia says:

    Thanks for sharing this information . they are very helpful to every driver!

  11. Drake says:

    Thanks for sharing these tips! I’m always interested in learning more about this.

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    KCTR has over 30 years’ experience in the trucking industry which has helped us develop a true understanding of what business owners, managers, dispatchers and drivers are looking for in a dealership/service center. Whether you need a call out on a Saturday night or need a courtesy trailer to finish your delivery, KCTR has the resources and desire to be a true partner for you and your trucking company.

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