🧪Fluid Capacities

Honda Civic LX-P Fluid Capacities

Factory fluid capacity for the Honda Civic LX-P.

Last updated: 2026-11-08 • Reading time: 8 min • By AllOEMManuals Editorial Team

Quick Answer

2018 Honda Civic LX-P: — RL85HM (POE).

GenerationYearsTop spec
20182018— RL85HM (POE)
201720170.94 LBS. (0.42 KG) — HFO-1234yf (R-1234yf)
201620160.94 LBS. (0.42 KG) — HFO-1234yf (R-1234yf)

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Manual ReferenceFluid Capacities

Check fluid capacities information for your Honda Civic LX-P

2018 Honda Civic LX-P: — RL85HM (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.

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Air Cond Compressor Oil— RL85HM (POE)
Air Cond Refrigerant0.94 LBS. (0.42 KG) — HFO-1234yf (R-1234yf)
Automatic Transmission Fluid (2.0L Eng,Coupe)3.70 QTS. (3.5 L) — HONDA HCF-2 Transmission Fluid
Brake Fluid— HONDA Heavy Duty Brake Fluid DOT 3
Engine Coolant (2.0L Eng,Coupe)1.41 GALS. (5.33 L) — HONDA Long-Life Antifreeze/Coolant Type 2
Engine Oil (2.0L Eng,Coupe)4.20 QTS. (3.97 L) — Genuine HONDA Motor Oil 0W-20 or API premium grade - SAE 0W-20 Detergent Oil
Fuel Tank12.39 GALS. (46.9 L)
Windshield Washer Fluid2.60 QTS. (2.46 L) — All Weather Windshield Washer Fluid
Notes
  • →Capacity is between: 2.60 - 3.50 ozs.
  • →50/50 with distilled water. Change including the remaining 0.46 qt. in the reserve tank.
  • →You may also use synthetic motor oil if it is labeled with the API Certification Seal and is the specified viscosity grade.
  • →Follow the Manufacturer's Instructions for the mixture ratio.
Air Cond Refrigerant0.94 LBS. (0.42 KG) — HFO-1234yf (R-1234yf)
Automatic Transmission Fluid (2.0L Eng,Coupe)3.70 QTS. (3.5 L) — HONDA HCF-2 Transmission Fluid
Brake Fluid— HONDA Heavy Duty Brake Fluid DOT 3
Engine Coolant (2.0L Eng,Coupe)1.41 GALS. (5.33 L) — HONDA Long-Life Antifreeze/Coolant Type 2
Engine Oil (2.0L Eng,Coupe)4.20 QTS. (3.97 L) — Genuine HONDA Motor Oil 0W-20 or API premium grade - SAE 0W-20 Detergent Oil
Fuel Tank12.39 GALS. (46.9 L)
Windshield Washer Fluid2.60 QTS. (2.46 L) — All Weather Windshield Washer Fluid
Notes
  • →50/50 with distilled water. Change including the remaining 0.46 qt. in the reserve tank.
  • →You may also use synthetic motor oil if it is labeled with the API Certification Seal and is the specified viscosity grade.
  • →Follow the Manufacturer's Instructions for the mixture ratio.
Air Cond Refrigerant0.94 LBS. (0.42 KG) — HFO-1234yf (R-1234yf)
Automatic Transmission Fluid (2.0L Eng)3.70 QTS. (3.5 L) — HONDA HCF-2 Transmission Fluid
Brake Fluid— HONDA Heavy Duty Brake Fluid DOT 3
Engine Coolant (2.0L Eng)1.40 GALS. (5.29 L) — HONDA Long-Life Antifreeze/Coolant Type 2
Engine Oil (2.0L Eng)4.20 QTS. (3.97 L) — Genuine HONDA Motor Oil 0W-20 or API premium grade - SAE 0W-20 Detergent Oil
Fuel Tank12.39 GALS. (46.9 L)
Manual Transmission Fluid2.00 QTS. (1.89 L) — HONDA Manual Transmission Fluid
Windshield Washer Fluid2.60 QTS. (2.46 L) — All Weather Windshield Washer Fluid
Notes
  • →50/50 with distilled water. Change including the remaining 0.46 qt. in the reserve tank.
  • →You may also use synthetic motor oil if it is labeled with the API Certification Seal and is the specified viscosity grade.
  • →Follow the Manufacturer's Instructions for the mixture ratio.

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Frequently Asked Questions

What fluid capacities does a Honda Civic LX-P use?
2018 Honda Civic LX-P: — RL85HM (POE).
Why do fluid capacities vary by generation for the Honda Civic LX-P?
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: 2026-11-08

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