Shell Rotella T5 10W-30 Synthetic Blend diesel engine oil with Triple Protection Plus technology combines synthetic base oils and advanced additive technology to provide protection against wear, deposits, and oil breakdown. Triple Protection Plus technology also provides better low-temperature flow and better fuel economy performance (up to 2% fuel economy savings compared to conventional 15W-40 motor oil). The advanced low-ash formulation helps control the blocking or poisoning of exhaust after-treatment devices, helping maintain vehicle emission compliance and engine fuel efficiency. Meeting the requirements of major US and European engine manufacturers for low-emission, heavy-duty engine applications, it's an excellent choice for on-highway fleets, construction and agriculture applications, and diesel pick-up trucks. Shell Rotella T5 is backed by a free warranty valid up to 10 years or 300,000 miles, whichever comes first. (Shell Rotella Limited Warranty: Valid up to 10 years or 300,000 miles, whichever comes first, if you exclusively use Shell Rotella T5 Synthetic Blend heavy-duty engine oil. Terms and conditions apply. See Rotella.Shell.com/warranty for details.)