Factory maintenance schedule OEM · verified
Normal service, condensed from the factory interval matrix.
| At 160,000 mi | Universal Vehicle Operation (inspect idle speed) |
Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2008 Ridgeline.
The 2008 Honda Ridgeline is a mid-size truck paired with a 5-speed automatic transmission and an engine specified to use 4.5 quarts of 5W-20 API oil, returning EPA fuel economy ratings of 15 mpg city, 20 mpg highway, and 17 mpg combined. Within the model's broader complaint history spanning 2003 to 2026, this year registers 140 owner reports — a middle-of-the-pack figure compared to the 333 logged in 2017 and the mere 2 recorded in 2015 — with air bags emerging as the dominant concern and 10 recalls attached to the model year. For researchers charting the Ridgeline's reliability arc, 2008 functions as neither a high point nor a low, but a representative data point where safety-system complaints have already begun to register in meaningful numbers.
Fluid capacities, tune-up values and fuel economy at a glance.
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses a BCI 24F · 585 CCA battery. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic 5-spd |
| Overall length | 206.7 in |
| Overall width | 76.8 in |
| Overall height | 70.5 in |
| Wheelbase | 122 in |
| Curb weight | 4504 lb |
| Track (front / rear) | 66.9 / 66.9 in |
| Weight distribution (front / rear) | 58/42 |
| EPA city / highway / combined | 15 / 20 / 17 mpg |
| Drivetrain | 4-Wheel or All-Wheel Drive |
| Recommended fuel | Regular Gasoline |
0–60 mph, quarter-mile, horsepower and torque from independent road tests.
Independent road tests for the Ridgeline of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.
| Year | Trim / engine | 0–60 | ¼ mile | HP | Drivetrain |
|---|---|---|---|---|---|
| 2009 | RTL 3.5L V6 | 7.70 sec | 16.00 sec | 250 hp | AWD |
| 2006 | RTS 3.5L V6 | 7.90 sec | 16.30 sec | 255 hp | AWD |
| 2006 | RTL 3.5L V6 | 8.10 sec | 16.40 sec | 255 hp | AWD |
| 2006 | RTL 3.5L V6 | 8.50 sec | 16.50 sec | 255 hp | AWD |
| 2006 | RTL 3.5L V6 | 8.60 sec | 16.50 sec | 255 hp | AWD |
| 2006 | RTL 3.5L V6 | 9.30 sec | 17.20 sec | 255 hp | AWD |
| 2012 | Sport 3.5L V6 | 8.00 sec | 16.30 sec | 250 hp | AWD |
| 2014 | RTL 3.5L V6 | 8.30 sec | 16.50 sec | 250 hp | AWD |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 4.5 qt of 5W-20 API engine oil, DOT 3 brake fluid. Torque lug nuts to 94 ft-lbs, the oil drain plug to 29.0 ft-lbs. The firing order is 1-4-2-5-3-6.
| Automatic Transmission Fluid | ATF |
| Automatic Transmission Fluid Capacity | 3.3-3.6 |
| Brake Fluid | DOT 3 |
| Differential Gear Oil Capacity | 5.5 Pints |
| Engine Oil | 5W-20 · API |
| Engine Oil Capacity | 4.5 qt |
| Engine Flywheel Bolts | 54 ft-lbs |
| Intake Manifold to Engine Bolts | 16 ft-lbs |
| Exhaust Manifold to Cylinder Head Bolts | 23 ft-lbs |
| Main Bearings | 11MM Bolts: 54 ft-lbs, 10MM Bolts: 36 ft-lbs |
| Engine Oil Pan Drain Plug | 29.0 ft-lbs |
| Oil Pump to Cylinder BLock Bolts/Studs | 9 ft-lbs |
| Lug Nuts | 94 ft-lbs |
| Transfer Case Fill Plug | 33.0 ft-lbs |
| Transfer Case Drain Plug | 33.0 ft-lbs |
| Automatic Transmission Drain Plug | 36.0 ft-lbs |
| Front Wheel Hub | 242 ft-lbs |
| Rear Wheel Hub | 181 ft-lbs |
| Cylinder Firing Order | 1-4-2-5-3-6 |
| Curb Idle Speed (No Load) | 730 rpm |
| Curb Idle Speed Variance (No Load) | 50 rpm |
| Ignition Timing Acceptable Variance | 2 degrees |
| Ignition Timing Reference RPM | Idle rpm |
| Refrigerant | R134a |
| Refrigerant Capacity | 1.27-1.38 lbs |
| Oil Type | PAG 46 |
| Oil Capacity | 6.00-6.50 oz |
| Standard BCI Group Number | 24F |
| Standard BCI Cranking Performance | 585 cca |
| Pressure Test | 14-18 psi |
| Radiator Cap Pressure Relief | 14-18 psi |
| Thermostat Opening Temperature | 169-176 °F |
| Regulated Fuel System Pressure (With Vacuum) | 57.0 |
| Engine Compression | 135 Minimum PSI. 28 Maximum variation PSI |
| Engine Oil Pressure | 10 psi @ idle, 71 psi @ 3000 rpm psi |
| Intake Valve Lash | 0.008-0.009 in |
| Exhaust Valve Lash | 0.011-0.013 in |
| Torque Caliper to Bracket | 53 ft-lbs / 16 ft-lbs |
| Torque to Knuckle | 101 ft-lbs / 80 ft-lbs |
| Minimum Pad Thickness | Front: 0.039; Rear: 0.039 in |
| Minimum Shoe Thickness | 0.039 in |
| Rotor Max Parallel Variation | 0.0006 in |
| Rotor Runout Limit | 0.0016 in |
| Rotor Nominal Thickness From | 1.098 in / 0.429 in |
| Rotor Nominal Thickness To | 1.102 in / 0.437 in |
| 1 | 14 ft. lbs., Step 2: 90 | 14 ft. lbs |
| 1 | 47 ft. lbs, step 2: 60 | 47 ft. lbs |
Normal service, condensed from the factory interval matrix.
| At 160,000 mi | Universal Vehicle Operation (inspect idle speed) |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The 2008 Honda Ridgeline sits in a clear downward trend of complaints and recalls from the generation’s rocky 2006 debut, where complaints peaked at 240 and recalls at 14. By 2008, complaints had dropped to 140 and recalls to 10, matching the 2007 figures and signaling that early teething issues were being resolved, though the data does not specify root causes. The 2008 model year also saw zero federal investigations, a marked improvement over the four investigations triggered by the 2006 model. With 53 technical service bulletins, it shares the same level of manufacturer guidance as 2007, and its top complaint areas—air bags and electrical system—are not accompanied by crash or fire rates that stand out from the generation’s norm. This year represents a mature point in the first-generation arc, offering a more sorted ownership experience than the launch year, making it a solid used purchase.
All 140 complaints on record, top 8 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 10 campaigns on record for this vehicle.
Honda (American Honda Motor Co.) is recalling specific 2003 Acura 3.2CL, 2013-2016 ILX, 2013-2014 ILX Hybrid, 2003-2006 MDX, 2007-2016 RDX, 2002-2003 3.2TL, 2004-2006, and 2009-2014 TL, 2010-2013 ZDX and 2001-2007 and… Remedy: Honda will notify owners, and dealers will replace the driver's air bag inflator with an alternate inflator, free of charge. The recall began April 10, 2019. Honda owners may…
Dorman Products, Inc. (Dorman) is recalling certain Accelerator Pedal Assemblies part numbers 699-114 and 825-5029-1, sold as replacement parts for 2003-2006 Acura MDX, 2004-2008 Acura TL and TSX, 2003-2007 Honda… Remedy: Dorman will notify owners, and qualified service facilities will replace the affected accelerator pedal assemblies, free of charge. The recall began December 9, 2019. Owners may…
Showing 5 of 53 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| A18-050 | 2026-06-30 | Air Bags | Service Bulletin - Warranty Extension: Customer Support Program For Front Passenger's… |
| A18-048 | 2026-02-28 | Air Bags | Service Bulletin - Warranty Extension: Customer Support Program For Driver's Airbag… |
| A14-077 | 2026-01-27 | Suspension | Service Bulletin - A pop or clunk is heard from the rear suspension in cold weather going… |
| A21120A | 2023-06-13 | Electrical System | Service News - The navigation clock and date are incorrect. This is due to a limited GPS… |
| A22-021 | 2022-09-30 | Structure | Service Bulletin - (Repair Procedure and Parts Information Revision) In salt-belt states… |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
4.5 qt of 5W-20 API, per the factory manual.
NHTSA lists 10 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 15 city / 20 highway / 17 combined mpg.