100K Service

Complete 100,000-mile service for the 1992 Dodge Viper 8.0L V10, including all fluid changes, filter replacements, spark plugs, drive belt inspection, and critical wear item inspection.

Warnings

Tools required

Parts

• Engine oil filter × 1 — Use OEM specification
• Air filter element × 1 — Use OEM specification
• Spark plugs × 10 — Champion RC12LYC or equivalent
• Fuel filter × 1 — Use OEM specification
• PCV valve × 1 — Use OEM specification
• Drain plug washer (differential) × 1 — Use OEM specification
• Drain plug washer (transmission) × 1 — Use OEM specification

Fluids

• 10W-30 conventional engine oil — 11 qt
• Ethylene glycol 50/50 coolant — 24 qt
• DOT 3 brake fluid — 1 qt
• Mopar power steering fluid or ATF+3 — 1.5 qt
• Mopar MS-9224 or 75W-90 GL-4 manual transmission fluid — 4.2 qt
• 75W-90 GL-5 differential fluid with limited-slip additive — 3.5 qt

Preparation

1. Park vehicle on level surface and engage parking brake.
2. Allow engine and exhaust system to cool completely (minimum 2 hours after operation).
3. Raise vehicle using floor jack at front crossmember and support on jack stands at manufacturer-specified points.
4. Remove both rear wheels for differential access.
5. Gather all replacement parts, fluids, and tools before beginning work.
6. Have adequate drain pan capacity available (oil change alone requires 12-quart capacity).

Procedure

1. 1

   Engine oil and filter change
   Locate oil drain plug on bottom of oil pan at rear. Remove drain plug and drain 11 quarts of oil into appropriate pan. Remove oil filter located on driver side of engine block using oil filter wrench. Apply thin coat of clean oil to new filter gasket, install new filter hand-tight plus 3/4 turn. Install drain plug and fill with 11 quarts of 10W-30 conventional oil. Start engine and verify no leaks, then recheck level after engine reaches operating temperature.
2. 2

   Air filter replacement
   Open hood and locate air filter housing on passenger side of engine bay. Release housing clamps or fasteners (typically spring clips or screws). Separate housing halves and remove old air filter element. Inspect housing interior for debris and clean if necessary. Install new air filter element ensuring proper seating in housing channels. Reassemble housing and secure all clamps or fasteners.
3. 3

   Spark plug replacement
   Remove spark plug wire boots one at a time by twisting and pulling at the boot (never pull on wire). V10 engine has 10 spark plugs, 5 per cylinder bank. Use 5/8-inch spark plug socket with extension to remove each spark plug. Inspect old plugs for wear patterns indicating engine condition. Gap new spark plugs to 0.035 inches. Install new plugs into the aluminum cylinder heads hand-tight, then torque to specification. If anti-seize is used on the threads, reduce torque by approximately 20-30% to avoid over-torquing in the aluminum heads. Reinstall spark plug wires ensuring each wire routes to correct cylinder and seats fully on plug terminal.
4. 4

   Manual transmission fluid change
   Locate transmission drain plug on bottom of transmission case and fill plug on side of case. Remove drain plug and drain approximately 4.2 quarts of fluid. Install drain plug with new washer. Remove fill plug and use fluid pump to fill transmission with Mopar MS-9224 or 75W-90 GL-4 fluid until fluid reaches bottom of fill plug opening (approximately 4.2 quarts). Install fill plug.
5. 5

   Rear differential fluid change
   With rear wheels removed, locate differential drain plug on bottom of rear differential housing and fill plug on front face of housing. Remove drain plug and drain approximately 3.5 quarts of fluid. Install drain plug with new washer. Remove fill plug and use fluid pump to fill differential with 75W-90 GL-5 fluid mixed with limited-slip additive per additive manufacturer instructions. Fill until fluid reaches bottom of fill plug opening (approximately 3.5 quarts total). Install fill plug.
6. 6

   Coolant drain and refill
   Ensure engine is completely cold. Place large drain pan (minimum 24-quart capacity) under radiator. Open radiator cap slowly to release any residual pressure. Locate radiator petcock or lower radiator hose and drain coolant completely. If equipped with engine block drain plugs, remove them to drain block completely. Close petcock or reinstall lower hose and block plugs. Fill cooling system with 24 quarts of 50/50 ethylene glycol coolant mixture using funnel. Start engine with radiator cap off and allow to reach operating temperature while adding coolant as level drops. Burp system by squeezing upper radiator hose. Install radiator cap when system is full and no air bubbles are present.
7. 7

   Brake fluid flush
   Locate brake fluid reservoir under hood. Remove cap and use turkey baster or fluid pump to remove old fluid from reservoir. Refill with fresh DOT 3 brake fluid. Bleed brakes starting with right rear wheel, then left rear, right front, left front. At each wheel, attach clear hose to bleeder valve, submerge other end in container with clean fluid, open bleeder valve and have assistant slowly depress brake pedal. Close valve before pedal reaches bottom. Repeat until fluid runs clear with no air bubbles. Maintain reservoir level throughout process. Final reservoir level should be at MAX mark.
8. 8

   Power steering fluid change
   Locate power steering reservoir. Use fluid pump or turkey baster to remove old fluid from reservoir. Refill with Mopar power steering fluid or ATF+4 (backward-compatible replacement for the original Chrysler ATF+ specification). Start engine and turn steering wheel lock-to-lock several times. Stop engine and check fluid level. Top off as needed to proper level on dipstick. Repeat process until fluid appears clean (may require multiple drain/refill cycles).
9. 9

   Fuel filter replacement
   Relieve fuel system pressure by removing fuel pump fuse and running engine until it stalls. Locate fuel filter along frame rail on driver side (inline filter with quick-disconnect fittings). Place drain rag under filter. Disconnect fuel lines from filter using appropriate disconnect tool for quick-connect fittings. Remove filter from mounting bracket. Install new filter noting direction of flow arrow on filter body (arrow points toward engine). Connect fuel lines ensuring they click into place. Reinstall fuel pump fuse. Cycle ignition key to ON position several times without starting to pressurize system. Check for leaks before starting engine.
10. 10

    PCV valve replacement
    Locate PCV valve in valve cover (typically on passenger side valve cover). Disconnect vacuum hose from PCV valve. Remove PCV valve by pulling or twisting depending on mounting method (press-fit or threaded). Install new PCV valve ensuring proper seating. Reconnect vacuum hose ensuring secure connection with no cracks in hose.
11. 11

    Drive belt inspection and adjustment
    Inspect serpentine drive belt for cracks, glazing, fraying, or missing ribs. Check belt tension by pressing on longest run of belt; deflection should be approximately 1/2 inch with moderate thumb pressure. If belt shows wear or tension is incorrect, note for replacement or adjustment. Inspect all pulleys for proper alignment and bearing condition by spinning each pulley by hand and listening for roughness or noise.
12. 12

    Chassis and suspension inspection
    With vehicle raised, inspect front and rear suspension components for wear. Check ball joint boots, tie rod ends, and control arm bushings for tears or deterioration. Inspect shock absorbers for leaks. Check rear halfshaft CV joint boots for tears. Inspect exhaust system for leaks, damage, or loose hangers. Check brake rotors for scoring or excessive wear. Inspect brake pads for remaining thickness. Document any items requiring future attention.
13. 13

    Tire rotation and inspection
    Inspect all four tires for tread depth, uneven wear patterns, cuts, or bulges. Minimum legal tread depth is 2/32 inch; replace if approaching this limit. The 1992 Viper uses staggered front (275) and rear (335) tire sizes, so front-to-rear rotation is not possible. Do not cross-rotate; only inspect and, if non-directional, rotate side-to-side within the same axle. Otherwise leave tires in position. Torque all lug nuts to specification in star pattern. Check tire pressures when cold and adjust to specification on door jamb placard.
14. 14

    Final inspection and test drive
    Lower vehicle from jack stands. Start engine and verify all fluid levels are correct. Check for any leaks around drain plugs, filters, and connections. Test all lights, horn, and wipers. Verify all warning lights extinguish after engine start. Perform test drive including acceleration, braking, and steering response. Listen for unusual noises. Verify transmission shifts smoothly through all gears. After test drive, recheck all fluid levels with engine at operating temperature. Inspect under vehicle one final time for any new leaks.

Reassembly

1. Reinstall rear wheels and torque lug nuts to specification in star pattern.
2. Lower vehicle completely and perform final torque check on all lug nuts.
3. Verify all caps and covers are reinstalled: oil fill cap, radiator cap, brake fluid reservoir cap, power steering reservoir cap.
4. Reset maintenance indicator if equipped.
5. Record all service performed and fluid brands used for future reference.

Verification

• Check for leaks under vehicle after test drive, particularly at drain plugs and filter locations.
• Verify engine oil level is correct on dipstick with engine at operating temperature.
• Confirm coolant level is at proper mark in overflow reservoir when cold.
• Verify brake pedal feels firm with no excessive travel or softness.
• Confirm all warning lights are off and gauges read normal during operation.
• Verify transmission shifts smoothly with no grinding or slipping.
• Check steering for proper feel with no unusual noises during lock-to-lock turns.
• Confirm no unusual engine noises after spark plug replacement.

More procedures for this vehicle