Frequently Asked Questions

Why is an oil change important for a 2018 GMC Sierra 3500HD?

• Removes contaminants and microscopic wear particles that damage bearings, rings and cylinders, helping preserve engine life and performance.
• Maintains proper lubrication and cooling for the 6.0L V8, which is critical when towing or hauling heavy loads—tasks this truck is built for.
• Helps sustain fuel economy and power output by reducing internal friction and deposit buildup.
• Protects your long-term ownership value by preventing premature engine wear and costly repairs.
• When performed at Coggin Buick/GMC of Orange Park, an oil change follows manufacturer specs, uses OEM‑recommended fluids and parts, and helps keep warranty coverage intact—repairs covered under warranty must be performed at a certified dealership.

How long does an 2018 GMC Sierra 3500HD oil change take?

• Most routine oil changes at our service center are completed in about 30–60 minutes, depending on whether a synthetic oil, filter replacement or additional inspections are required.
• If your truck requires extended services—multi-point inspections, fluid top-offs, or diagnostic checks—allow extra time; our advisors provide clear time estimates on arrival.
• We prioritize efficiency without cutting corners: factory‑trained technicians follow precise procedures that preserve engine performance and warranty eligibility.
• Same‑day service is commonly available; you can schedule online or visit our service lane for fast turnarounds at Coggin Buick/GMC of Orange Park.

How much does an oil change cost for an 2018 GMC Sierra 3500HD?

• Costs vary by oil type (conventional, synthetic blend, full synthetic) and any added services, but our dealership offers transparent pricing and package options to fit different needs.
• Coggin Buick/GMC of Orange Park often costs less than independent shops when you factor immediate benefits—accurate service, correct fluid and filter, and included inspections—and long‑term savings from avoiding premature engine repairs.
• Using OEM‑recommended oil and filters reduces risk of follow‑up service and helps maintain fuel economy and resale value, lowering ownership costs over time.
• Remember: any repairs or adjustments covered under warranty must be completed at a certified dealership to preserve coverage; our service team documents all work to protect your investment.

How often should you get an oil change?

• Follow the interval recommended in your owner’s manual for the 2018 GMC Sierra 3500HD; typical guidance is more frequent checks under severe driving or heavy towing conditions.
• General practice: every 5,000–7,500 miles for conventional oil, and up to 7,500–10,000 miles for full synthetic—adjust intervals sooner if you tow, haul heavy loads, or operate in extreme temperatures.
• Regular service at our dealership ensures interval tracking, digital records and timely reminders so you never miss a scheduled maintenance that protects warranty rights and vehicle performance.

What type of oil does an 2018 GMC Sierra 3500HD take?

• Your truck requires oil that meets the manufacturer’s specifications for viscosity and performance; many owners benefit from full synthetic for improved protection and stability under load.
• Coggin Buick/GMC of Orange Park uses OEM‑recommended fluids and filters that meet GM standards, ensuring compatibility with the 6.0L V8 and preserving emissions and performance systems.
• Choosing the correct oil at a certified dealership helps maintain warranty eligibility—any warranty repairs must be performed at a certified dealer to qualify.

How much oil does an 2018 GMC Sierra 3500HD need?

• The 6.0L V8 in your Sierra typically requires roughly 6–8 quarts of engine oil when changing filter and filling from empty; exact capacity is listed in the owner’s manual.
• At Coggin Buick/GMC of Orange Park we fill to the precise manufacturer specification and verify levels after warm‑up to prevent overfill or underfill conditions.
• Correct oil volume and proper filter installation reduce risk of leaks and ensure consistent oil pressure—critical for durability when towing or carrying heavy loads.