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What is the best oil for diesel trucks?

I upgraded my midsize pickup to a Chevy Colorado with the turbo-diesel engine, but I’ve never had a diesel engine before. What oil should I use?

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Shannon Fitzgerald · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Congrats on taking the leap from gas to diesel—the
Chevy Colorado
’s diesel engine is mighty capable in both towing capacity and torque power so you made a fine choice. The best type of oil for diesel trucks is going to be a full synthetic oil.
Unlike traditional oil, synthetic oil contains no impurities and has special additives included that help protect and improve your diesel engine’s performance and longevity. If you look on your truck’s engine oil cap, you will usually see the manufacturer’s recommended oil specifications for your diesel engine. This will also be in your owner’s manual.
Generally, a Chevy Colorado with the Duramax diesel engine runs on a full synthetic 5W30 or 5W40. Most Colorado diesel truck drivers recommend finding brands that are GM dexos2- approved. This includes:
  • Pennzoil Platinum Euro L
  • Mobil 1
  • Valvoline
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