Honda Ridgeline RTL-E Fluid Capacities
Factory fluid capacity for the Honda Ridgeline RTL-E.
Last updated: 2026-10-28 • Reading time: 8 min • By AllOEMManuals Editorial Team
Quick Answer
2023 Honda Ridgeline RTL-E: 4.50 OZS. (0.13 L) — RB100EV-01 (POE).
| Generation | Years | Top spec |
|---|---|---|
| 2023 | 2023 | 4.50 OZS. (0.13 L) — RB100EV-01 (POE) |
| 2020-2022 | 2020-2022 | 4.50 OZS. (0.13 L) — RL85HMS (POE) |
| 2018-2019 | 2018-2019 | 4.50 OZS. (0.13 L) — RL85HMS (POE) |
This vehicle's factory manual
The spec is above. This opens the 2023 Honda Ridgeline RTL-E factory book. Use another year if yours is older.
Honda Ridgeline RTL-E maintenance schedule
Know the exact fluid capacities job for your Honda Ridgeline RTL-E
2023 Honda Ridgeline RTL-E: 4.50 OZS. (0.13 L) — RB100EV-01 (POE).
Fluid type and capacity can change by engine, drivetrain, and transmission. Verify the exact branch before filling anything. Once the spec is confirmed, use the supplies and purchase links below to build the full one-trip shopping list before you start the repair.
Exact Vehicle Check
The button opens the factory book for this vehicle. Use the engine picker only when your trim is not the one this page already matched.
2023
- →Approximate capacity.
- →Fill to line on reservoir.
- →This coolant is pre-mixed with 50/50 antifreeze and water. Never add straight antifreeze or plain water. If Honda antifreeze/coolant is not available, you may use another major-brand non-silicate coolant as a temporary replacement. Make sure it is a high-quality coolant recommended for aluminum engines.
- →You may use a synthetic motor oil if it displays the API Certification Seal, and it is the proper weight.
- →Follow the Manufacturer's Instructions for the mixture ratio.
2020-2022
- →Approximate capacity.
- →Fill to line on reservoir.
- →This coolant is pre-mixed with 50/50 antifreeze and water. Never add straight antifreeze or plain water. If Honda antifreeze/coolant is not available, you may use another major-brand non-silicate coolant as a temporary replacement. Make sure it is a high-quality coolant recommended for aluminum engines.
- →You may use a synthetic motor oil if it displays the API Certification Seal, and it is the proper weight.
- →Follow the Manufacturer's Instructions for the mixture ratio.
2018-2019
- →Approximate capacity.
- →Using a transmission fluid other than HONDA ATF DW-1 may adversely affect the operation and durability of your vehicle's transmission, and damage the transmission. Any damage caused by using a transmission fluid that is not equivalent to Honda ATF DW-1 is not covered by Honda's new vehicle warranty.
- →Fill to line on reservoir.
- →This coolant is pre-mixed with 50/50 antifreeze and water. Never add straight antifreeze or plain water. If Honda antifreeze/coolant is not available, you may use another major-brand non-silicate coolant as a temporary replacement. Make sure it is a high-quality coolant recommended for aluminum engines.
- →You may use a synthetic motor oil if it displays the API Certification Seal, and it is the proper weight.
- →Follow the Manufacturer's Instructions for the mixture ratio.
2017
- →Approximate capacity.
- →Using a transmission fluid other than HONDA ATF DW-1 may adversely affect the operation and durability of your vehicle's transmission, and damage the transmission. Any damage caused by using a transmission fluid that is not equivalent to Honda ATF DW-1 is not covered by Honda's new vehicle warranty.
- →Fill to line on reservoir.
- →This coolant is pre-mixed with 50/50 antifreeze and water. Never add straight antifreeze or plain water. If Honda antifreeze/coolant is not available, you may use another major-brand non-silicate coolant as a temporary replacement. Make sure it is a high-quality coolant recommended for aluminum engines.
- →You may use a synthetic motor oil if it displays the API Certification Seal, and it is the proper weight.
- →Follow the Manufacturer's Instructions for the mixture ratio.
Manual already checked Amazon for you
You came here for the exact spec. Now here is the exact part — plus the two things people always forget and have to run back to the store for.
Honda Ridgeline RTL-E Fluid Service Kit
Buy all the fluids your Honda Ridgeline RTL-E needs in one cart.
We earn a small commission if you buy through these links — at zero extra cost to you. We only suggest items that match the factory specs on this page.
Fluids — Manual's Parts List
Everything for a full fluid service weekend.
- 1Engine OilShop →
Match viscosity to your spec
- 2CoolantShop →
Match color/chemistry — never mix types
- 3Long-Neck FunnelShop →
Transmission and differential fill holes are recessed
- 4Fluid Extraction PumpShop →
Remove old brake fluid from reservoir without mess
- 5Shop RagsShop →
You will need more than you think
Get everything at once
One search shows all of the above on a single page.
Links go to Amazon via our affiliate store (aiautorepair-20). We earn a small commission at no extra cost to you — it keeps the site running and the data free.
One-Trip Shopping List
Recommended supplies and tools for this job, grouped so you can buy everything before the repair starts.
Fluid Extraction Pump
Cleanly remove old fluids from reservoirs.
Clean Shop Rags
Lint-free rags for cleaning dipsticks and spills.
Multi-Purpose Funnel
Long-neck funnel for hard-to-reach fill points.
Nitrile Gloves
Keep hands clean during multi-fluid maintenance.
Project Essentials
Basic tool sets, gloves, and cleaning supplies for your Honda Ridgeline RTL-E so the job is ready when the parts arrive.
Frequently Asked Questions
- What fluid capacities does a Honda Ridgeline RTL-E use?
- 2023 Honda Ridgeline RTL-E: 4.50 OZS. (0.13 L) — RB100EV-01 (POE).
- Why do fluid capacities vary by generation for the Honda Ridgeline RTL-E?
- Different engine options, transmission types, and cooling system designs across model years change total fluid volumes. Always use the capacity listed for your exact year and engine code — do not guess across generations.
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Author & Review
Published by AllOEMManuals, founded by Lyndon Bedford, an automotive technician with 20 years of experience. He owned and operated a mechanic shop in Hurst, Texas from 2014 to 2022 and continues hands-on repair work.
Content may combine manual references, general repair templates, and AI-assisted drafting. Confirm the source, vehicle configuration, and applicability before working. Report corrections through our contact page.
Last updated: 2026-10-28