2014-2019 Chevrolet Corvette (C7) LT1 oil and filter change

Idle the engine for three minutes if starting cold. Warm oil pours faster and carries suspended contaminants out with it. Do not let it run to full operating temperature before draining; a scalding-hot LT1 delivers oil in the 240 F range at the drain plug and burns skin instantly.

The C7 chassis sits low enough that steel ramps are marginal even with lead-on extensions. A two-post lift is the correct answer. If using jack stands, lift at the factory jack pucks under the rocker seams and confirm stands are rated for the entire chassis weight. Chock the rear wheels before lifting the front.

The C7 has two undertrays that must come off for oil service. The front tray drops with eight T15 Torx screws and four 7mm push-pin retainers. The center belly pan retains with six more T15 screws. Set both trays flat and out of the workspace. Undertray removal is not optional; the drain plug and filter are inaccessible from below without both trays down.

Position the drain pan under the drain plug at the rear of the oil pan. Break the 15mm drain plug loose, then finish by hand while pressing inward against the sealing surface. Once the threads release, pull the plug straight away in one motion. Let the oil drain for at least ten minutes. Wipe the drain boss clean, fit a new aluminum gasket, and reinstall the plug. Torque the drain plug to 18 ft lbs (25 Nm). Verify against your service manual. The LT1 aluminum oil pan does not tolerate over-torqued drain plugs; strip the threads and the pan is a several-hundred-dollar mistake.

The filter is a paper cartridge inside a plastic cap on the top rear of the engine, accessed from above through the top of the engine bay (base LT1 wet sump). On dry-sump Z51 and Z06 LT4 variants, the filter cap is in a different location; check the engine cover callout. Fit the 32mm cap socket squarely on the filter cap and turn counterclockwise. As the cap loosens, oil drains back into the housing through a bypass tube; wait ten seconds before lifting the cap out to avoid a splash. Pull the cap and cartridge together. Discard the cartridge and the cap O-ring.

Lubricate the new cap O-ring with fresh oil. Fit the new cartridge into the cap. Thread the cap into the housing by hand. Torque the oil filter cap to 18 ft lbs (25 Nm). Verify against your service manual.

Remove the fill cap on the driver-side valve cover. Wet-sump LT1: pour 8.5 US quarts of Dexos2 5W-30 through a long-neck funnel. Dry-sump: pour 9.5 US quarts. Reinstall the fill cap. Start the engine and confirm the oil pressure gauge reads normal within five seconds. Let it idle for one minute, then shut down. Wait five minutes for oil to settle back into the pan.

Check the dipstick or, on cars without a dipstick, the on-screen oil life monitor's oil level check. The level should read at the upper mark. Top off in quarter-quart increments if needed.

Refit the center belly pan and front undertray with their T15 screws and push-pins. Lower the vehicle. Reset the oil life monitor: with the ignition on and engine off, press Menu, scroll to Vehicle Info, select Oil Life, then press and hold Set/Reset until the display reads 100%.