Does a diesel engine need to warm up before driving?

I’m heading out early tomorrow on a winter road trip. Does my diesel engine need to warm up before I hit the road?

Find out if you’re getting ripped off on your car insurance in less than two minutes.
No spam · No long forms · No fees
Find savings (100% Free)
rating white
3.5k Ratings
Answer provided by
Jason Tushinski
Answered on Jan 28, 2022
If you want to warm up your diesel vehicle before hitting the road, knock yourself out—but idling for more than a minute or two is unnecessary, even for a diesel engine.
Diesel engines are now computer-controlled and designed to warm up quickly, thus reducing the amount of time you need to idle to reach the ideal operating temperature. If you let a newer diesel engine idle for too long, it can cause problems including:
  • Intake manifolds (which evenly distribute the air and fuel mixture to the engine’s cylinders) can gather more soot than is recommended
  • DPF (diesel particulate filter) can clog up faster, causing burns and wasting fuel unnecessarily
The best thing you can do to warm up your diesel engine—after letting it idle for no longer than two minutes—is to start driving it. Heading off at a steady pace will heat up the engine and get the oil circulating. But don’t hit the gas too hard, as slamming a cold engine with high RPMs can lead to excessive wear and tear.
Your diesel engine might be able to warm up easily, but your vehicle can’t protect itself—it needs a robust car insurance policy for that. With Jerry, finding a great and affordable car insurance policy has never been easier. No forms, no phone calls, and no hassle!

Here to save on car and home insurance? Great, you do that. We’ll do everything else.

Sign up in under a minute.
No need to fill out forms or shop around. Sign up in 45 seconds to start saving. Jerry does the rest.
Jerry collects and analyzes your current coverage.
Say hello to Jerry, your new insurance agent. We’ll contact your insurance company, review your current plan, then find the coverage that fits your needs and saves you money.
Get the best options before your renewal.
Jerry does all the picky, busy work by comparing prices and coverage from more than 50+ insurance companies. We compare what we find to your current policy and offer you the three best options before every renewal.

Easiest way to compare and buy car insurance

√
No long forms
√
No spam or unwanted phone calls
√
Quotes from top insurance companies
Find insurance savings — it's 100% free