A 1998 Honda Fourtrax (TRX300) holds 2.4 quarts of oil with a filter change, or 2.2 quarts without.
How much oil does a 1998 Honda Fourtrax hold?
A 1998 Honda Fourtrax holds 2.4 quarts of oil with a filter change, or 2.2 quarts without.
Grab Honda GN4 10W-40 4-stroke motorcycle oil (part 08C35-A196S01)—part number 08C35-A196S01 will do the trick. Measure the level on level ground with the engine warm and running; the dipstick should land between the upper and lower marks. If you're doing a full drain, plan to catch about 2.4 quarts from the engine and filter.
How much oil does a Honda Fourtrax take?
The TRX300 engine takes 2.4 quarts of oil with filter replacement, or 2.2 quarts without.
Honda’s official spec for Fourtrax 300 models from 1988–2000 is GN4 10W-40 oil. Don’t skip the new Honda crush washer (part 91091-MF70000) when you reinstall the drain plug—leaks are no fun. And seriously, overfilling can wreck your clutch or force oil past the crankshaft seals.
How much oil does a Honda Fourtrax 350 take?
A Honda Fourtrax 350 takes 3 quarts of oil with a new filter.
Stick with Honda GN4 10W-40 oil (part 08C35-A196S01). The dry sump holds about 2.75 quarts, and the fresh filter adds another 0.25 quart. Warm the engine, shut it off, wait 2–3 minutes, then check the level on level ground.
What kind of oil does a 1997 Honda Fourtrax 300 take?
A 1997 Honda Fourtrax 300 takes Honda GN4 10W-40 4-stroke motorcycle oil.
Honda part number 08C35-A196S01 covers the 5-quart bottle you’ll need. Ride in extreme heat or haul heavy loads? Consider Honda HP4 (08207-99916) semi-synthetic for extra protection. Change oil every 100 hours or once per season—whichever comes first—for long-term engine health.
What kind of oil does my Honda FourTrax use?
Your Honda FourTrax uses Honda GN4 10W-40 4-stroke motorcycle oil.
For TRX300 models from 1988 to 2000, this is the only oil Honda approves for warranty service. Grab part number 08C35-A196S01 for a 5-quart jug. Storing your ATV over winter? Swap the oil before tucking it away to flush out acidic combustion byproducts.
What is a 1999 Honda FourTrax 300 worth?
As of mid-2026, a clean 1999 Honda Fourtrax 300 averages about $1,100–$1,400 in fair condition.
| Condition | Average Price (USD) | Notes |
|---|
| Excellent | $1,800–$2,200 | Low miles, no rust, recent service |
| Good | $1,100–$1,400 | Minor wear, runs well |
| Fair | $700–$950 | Visible wear, needs some work |
| Project | $300–$600 | Needs engine or electrical repair |
Values come from the Kelley Blue Book ATV tool and Edmunds dealer auction data, adjusted for 2026 market trends.
What oil goes in a Honda Fourtrax 350?
A Honda Fourtrax 350 uses Honda 10W-30 or GN4 10W-40 4-stroke oil.
Top it off through the left-side fill cap; the dipstick sits on the right. Start with 2 quarts, then add 0.5–0.75 quart increments until you hit the full 3-quart mark with a new filter. Torque the drain plug to 27 ft-lb (36 Nm) to avoid stripping the aluminum case.
What kind of oil goes in a Honda Rancher 420?
A Honda Rancher 420 uses GN4 10W-30 oil.
Honda part number 08C35-A196S01 (5-quart bottle) is the right choice here. The engine holds about 2.5 quarts with a fresh filter. Always swap in a new crush washer (91091-MF70000) when you service it—leaks are a pain.
How much oil does a 1986 Honda Fourtrax 350 take?
A 1986 Honda Fourtrax 350 takes 3 quarts of oil with a new filter.
Stick with GN4 10W-40 oil (part 08C35-A196S01). Check the oil level on level ground with the engine warm and the ATV upright. Draining the whole system? Expect to recover about 2.7 quarts from the engine plus another 0.25 quart from the filter.
What kind of oil does a 1999 Honda FourTrax 300 take?
A 1999 Honda Fourtrax 300 takes Honda GN4 10W-40 4-stroke oil.
Honda part number 08C35-A196S01 covers the 5-quart bottle. A typical oil change kit includes one genuine Honda oil filter (15410-MEL000) and one crush washer (91091-MF70000). Dusty trails? Change the oil every 50 hours to keep the engine happy.
What spark plug does a Honda Fourtrax 300 take?
A Honda Fourtrax 300 uses an NGK DPR8EA-9 spark plug.
Gap it to 0.028–0.031 inches with a wire feeler gauge. Torque to 13 ft-lb (18 Nm). Replace the plug if it’s fouled or has over 100 hours—reliable cold starts and smooth idle depend on it. Grab part number 98079-56512 for the OEM NGK plug.
What size battery does a Honda Fourtrax 300 use?
A Honda Fourtrax 300 uses a 12V 12AH battery with 200 cold cranking amps.
Compatible part numbers include 31M-P2 (Honda), YTX12-BS (Yuasa), and 519403001 (Mighty Max). Always disconnect the negative terminal before pulling the old battery to dodge short circuits. Fully charge the new battery before installation and slather the terminals with grease to fight corrosion.
Can you use synthetic oil in Honda ATVs?
Yes, you can use synthetic oil in Honda ATVs.
Honda’s own HP4 (08207-99916) semi-synthetic is the OEM pick for tough conditions. Brands like Amsoil, Mobil 1, and Red Line also sell 10W-30 or 10W-40 synthetic ATV oils that play nice with four-stroke engines. Synthetic holds up better in high-heat or high-load situations and can let you stretch oil change intervals when you use it regularly.
What is a 1995 Honda Fourtrax worth?
As of mid-2026, a 1995 Honda Fourtrax 300 averages $800–$1,100 in good condition.
| Condition | Average Price (USD) |
|---|
| Excellent | $1,500–$1,900 |
| Good | $800–$1,100 |
| Fair | $500–$750 |
| Project | $250–$500 |
These values blend Kelley Blue Book and Edmunds auction data, tweaked for today’s ATV market.
What kind of oil do you put in a Honda Recon?
A Honda Recon uses 2 quarts of GN4 10W-30 oil.
Honda part number 08C35-A132S01 covers the 5-quart bottle. The dry engine holds about 1.7 quarts; add the filter and you’re at 2 quarts total. Always toss in a new crush washer (91091-MF70000) to keep leaks out of the drain plug.
