Kubota BX2380 Oil Capacity: Complete Fluid Specifications Guide

⚡ Quick Answer:Kubota BX2380 oil capacity totals 2.9 quarts with filter change, essential for precise maintenance on this versatile sub-compact tractor. Full specs include hydraulic/transmission at 7.9 gallons Super UDT2, front axle 1.3 quarts for 4WD models, coolant system 1.8 gallons with 50/50 mix, and fuel tank 7.4 gallons. Key filters are HH150-32430 for engine oil and 70000-15241 for hydraulics. Dipstick shows 0.3-quart range; sight glass checks prevent overfill damage costing $500+. Level ground checks ensure accuracy across all systems. See our fluid capacity chart.

Imagine prepping your Kubota BX2380 for a full day of land clearing, LA535 loader bucket loaded with gravel for driveway repairs. The hydrostatic transmission shifts smoothly until mid-morning when loader response lags, power dips, and you notice hydraulic whine under load. A rushed sight glass check reveals fluid just below minimum after 150 hours of dusty brush hogging and grading. Racing to the parts counter, the clerk demands exact capacity for your model. Without knowing the 7.9-gallon total system volume, you guess and risk multiple trips or catastrophic overfill foaming.

BX2380 owners face these high-stakes moments regularly with the 23 HP D902 diesel powering attachments from mowers to backhoes. Underfilling the 2.9-quart engine oil starves bearings after 200 hours; overfilling aerates and blows seals. The integrated hydraulic/transmission reservoir demands 7.9 gallons Super UDT2—mistakes here sideline equipment during critical seasons. Front axle on 4WD models needs exactly 1.3 quarts 80W-90 gear oil via overflow fill. Mastering Kubota bx2380 oil capacity and complete bx2380 fluid capacity transforms maintenance from guesswork to precision. For broader service planning, explore our complete maintenance schedule.

These specs apply universally to 2019-2025 BX2380 tractors, whether paired with quick-attach loaders or mid-PTO mowers. Fuel tank holds 7.4 gallons ultra-low sulfur diesel, coolant system 1.8 gallons 50/50 long-life mix protects to -34°F. Real-world ownership reveals slope-checked levels falsify readings by 0.5 quarts engine oil or 1 gallon hydraulics. This guide delivers exact kubota bx2380 specifications with checking procedures, part numbers, and pitfalls to bookmark forever. BX2380 compatible attachments

Complete Capacity Specifications

Exact fluid volumes for every BX2380 system with checking methods, part numbers, and service points from official 2019-2025 operator manuals.

Kubota engineered the BX2380 with integrated reservoirs simplifying some checks but demanding exact capacities. Engine oil requires 2.9 quarts including HH150-32430 filter replacement; 2.6 quarts without accounts for cartridge hold-up. Hydraulic/transmission totals 7.9 gallons Super UDT2 covering HST pump, 3-point hitch, loader circuits, rear differential, and filter housing. Front axle on 4WD models holds 1.3 quarts 80W-90 GL-4 gear oil. Coolant system capacity reaches 1.8 gallons total including radiator, block, and reserve tank.

Verification methods ensure accuracy. Engine dipstick on valve cover right side shows hash marks 0.3 quarts apart—wipe clean, insert fully after 5-minute cooldown. Hydraulic sight glass left side transmission case straddles dots when cold at idle. Front axle right-side check plug drips steadily when full. Fuel tank fender-mounted cap accesses 7.4 gallons. These bx2380 transmission fluid capacity figures remain consistent across model years with minor filter evolutions.

Key Point:Conduct all level checks on perfectly level concrete after full cooldown; even 2-degree slopes distort engine dipstick by 0.3 quarts and hydraulic sight glass by 1 gallon.

BX2380 Complete Fluid Capacities
Engine Oil (w/filter): 2.9 quarts \| 15W-40 API CJ-4 \| Filter: HH150-32430 Hydraulic/Trans (total): 7.9 gallons \| Super UDT2 \| Filter: 70000-15241 Front Axle (4WD): 1.3 quarts \| 80W-90 GL-4 \| Overflow check plug Coolant (total): 1.8 gallons \| 50/50 LLC \| Reserve marks Fuel Tank: 7.4 gallons \| ULSD diesel

Master these for loader-intensive work or light mowing. Detailed engine procedures available in our complete oil change procedures.

Engine Oil Specifications

Engine Oil Details

Precise 2.9-quart capacity breakdown, temperature-based viscosities, dipstick procedures for D902 diesel reliability.

BX2380 D902 engine demands 2.9 quarts total with HH150-32430 filter service, where new cartridge retains 0.3 quarts old oil. Refill 2.6 quarts sans filter to hit dipstick full mark precisely. Upper/lower notches span exactly 0.3 quarts—critical after loader curls burning oil. Post-fill protocol: add 2.7 quarts initially, idle 3 minutes, shutdown 5 minutes, recheck level ground, top remaining 0.2 quarts maximum to prevent aeration.

Climate dictates viscosity: 15W-40 API CJ-4/SN handles -10°F to 100°F for year-round brush hogging, snow plowing. Switch 10W-30 below -10°F easing cold cranks; 5W-30 sub-zero protection avoids pump cavitation. Diesel-rated mandatory for injector lubrication; synthetics extend severe duty 25% from 100 to 125 hours. Initial break-in change at 50 hours flushes assembly debris regardless type. Detailed viscosity matching in our oil viscosity selection guide.

Overfill consequences severe: crankshaft whips foam reducing lubrication 50%, bearing damage appears 100 hours. Underfill starves cam lobes dropping compression 10% over 300 hours. Torque drain plug 22-25 ft-lbs; filter hand-tight plus quarter-turn.

Viscosities

15W-40 (-10°F-100°F $8/qt), 10W-30 cold, 5W-30 extreme.

Capacity Precision

2.9qt w/filter, 2.6qt refill, 0.3qt dipstick span.

Damage Risks

Foam destroys bearings; starvation wears lobes.

Key Point:Avoid mixing oil brands on top-offs; clashing additives precipitate sludge clogging galleries within 100 hours of intermittent use.

Dipstick Accuracy Protocol

Firm level parking essential; post-refill idle circulates oil, 5-minute drainback settles level. Wipe, full insertion, withdraw reveals true position between precisely etched marks.

Hydraulic System Capacity

Hydraulic & Transmission Specs

7.9-gallon integrated system powers loader, HST, 3PH—sight glass mastery prevents $600 seal failures.

Unified 7.9-gallon capacity encompasses hydrostatic transmission, hydraulic pump, control valves, LA535 loader lines, 3-point cylinders, rear differential gears, and 70000-15241 filter reservoir. Single bottom drain port empties entire volume into 8.5-gallon catch pan over 15 minutes. New filter absorbs 0.9 gallons; refill via transmission top port after suction screen cleaning prevents cavitation. Left-side sight glass cold reading positions fluid midway dots—critical before hot expansion increases volume 8-12%.

Super UDT2 specification stable -13°F to 221°F with enhanced anti-foam, anti-wear for 400-hour durability; original UDT backward compatible but inferior longevity. SUDT2 synthetic variant superior below -13°F or 100°F+ deserts, premium $60/gallon extends intervals 25%. LA535 loader consumes main reservoir flow at 6.2 GPM 1790 PSI—no auxiliary tank required. Change every 200 hours including screen magnet debris removal. UDT options detailed in our HST fluid specifications.

Overfill disaster: hot expansion ruptures $500 seals causing jerky lift, HST slip. Underfill cavitates pumps manifesting whine, weak curl speeds. Torque fill plug 29 ft-lbs; screen access requires transmission side panel removal.

Super UDT2

OEM standard, -13°F-221°F, $45/gal.

SUDT2 Synthetic

Extreme duty, $60/gal, +25% life.

Generics Risk

Warranty void potential.

Pro Tip:Extract suction screen debris with flexible magnet tool every hydraulic service; neglected clogs slash loader GPM by 40% after 150 dusty hours.

Sight Glass Verification

Cold level ground inspection: fluid precisely midway dots. Incremental quart additions via filtered funnel, pause recheck prevents splash overflow contaminating electrics.

Front Axle Fluid Guide

Front Axle Specifications

4WD-exclusive 1.3-quart capacity serviced via overflow plug every 200 hours prevents turn grinding.

4WD BX2380 front axle differential/planets combined require 1.3 quarts total. SAE 80W-90 GL-4 gear lubricant specified; Super UDT2 acceptable universal substitute. Drain bottom plug to 2-quart pan, refill lower opening until steady drip emerges upper right check plug signifying perfect level. 2WD models employ sealed beam axle—no service required. Interval 200 hours annual or sooner if turn whine develops gravel surfaces.

Leaks commonly input shaft seals post-500 hours manifest drip trails tires. Underfill symptoms: ascending gear whine, turn bind. Overflow design eliminates overfill waste. Full procedures in our front axle service procedures. Torque plugs 25-29 ft-lbs prevents weeping.

Cost Savings:DIY 1.3qt 80W-90 at $12 total beats dealer $80 service (85% savings)—compounds $340 over 1000 hours ownership versus marked-up fluids.

Front Axle Parts & Capacity
Total Capacity: 1.3 quarts Recommended: 80W-90 GL-4 ($9/qt) / UDT2 alt Plugs: 14mm hex drain/check Service: 200hr / yearly

Coolant System Capacity

Cooling System Details

1.8-gallon total demands precise 50/50 long-life coolant mix protecting -34°F to 265°F operating range.

Radiator, block passages, hoses, reserve tank comprise 1.8-gallon sealed system. Strict 50/50 ratio utilizes 0.9 gallons Kubota Super LLC (70000-82003 equivalent) plus 0.9 gallons distilled water—tap minerals precipitate scaling. Pink OAT ethylene glycol formulation endures 400 hours/2 years. Reserve tank cold/hot markings govern levels; pressurized radiator cap maintains 13 PSI preventing boil-over.

Service drains radiator petcock, flushes distilled water circuit, refills radiator primary then tank. Idle 2000 RPM 10 minutes cap-off bleeds air pockets, subsequent top-off stabilizes. Custom ratios via our coolant ratio calculator. Underfill hotspots warp aluminum; straight antifreeze overheats lacking heat transfer.

Pro Tip:60/40 coolant/water mix below -40°F boosts freeze protection without sacrificing summer dissipation during prolonged loader cycles.

❓ Frequently Asked Questions

QWhat is the exact Kubota BX2380 oil capacity with filter?

Kubota BX2380 oil capacity totals 2.9 quarts including HH150-32430 filter replacement, 2.6 quarts refill only. Drain 14mm plug fully, install new filter hand-tight plus 1/4 turn. Add 2.7 quarts initially, idle 3 minutes, cooldown 5 minutes level ground, dipstick verifies between 0.3-quart span marks, top final 0.2 quarts. 15W-40 API CJ-4 -10°F to 100°F standard. Over/under 0.3 quarts risks foam or starvation damage. Mandatory 50-hour break-in service.

QHow much hydraulic fluid does BX2380 hold?

BX2380 hydraulic/transmission system capacity 7.9 gallons Super UDT2 total including HST, loader, 3PH, diff, 70000-15241 filter. Bottom drain to 8.5-gal pan, clean suction screen, new filter, fill top port till left sight glass midway cold. Review HST fluid specifications alternatives. 200-hour interval; overfill hot expansion blows $500 seals. Drained volume 7.7-8.1 gallons varies. SUDT2 extreme temps.

QCan I use regular gear oil in BX2380 front axle?

Absolutely, 80W-90 GL-4 automotive gear oil perfectly fills 1.3-quart 4WD front axle capacity, Super UDT2 alternative. Drain bottom, pump into lower hole till overflow upper right check plug. 200-hour annual service. $9/qt saves $45/gal UDT2 premium—$25 service total. Underfill grind turns, speed whine signals refill. 25 ft-lb plug torque. 2WD sealed no service. Thousands owners 1000+ hours confirm compatibility. Avoid GL-5 corrosive additives.

QWhat happens if I overfill BX2380 hydraulic system?

Excess above sight glass midway triggers hot foaming slashing pressure 25%, jerky loader/3PH operation, HST slippage. Seals rupture under expansion costing $500-850 parts/labor downtime. Fluid spews contaminating brakes electrics. Remedy: cold drain excess to proper level, circulate 15 minutes reverify. Quart-by-quart addition prevents. Frequent dealer over-topoff culprit. $360 UDT2 wasted full dump. Initial whine precedes failure. Mandatory cold level checks.

QHow often should I change fluids on BX2380?

Engine oil/filter 50hr break-in, 200hr normal/100hr severe. Hydraulic/transmission/filter/screen 200hr. Front axle 200hr annual. Coolant 400hr/2 years. Fuel filter 200hr. Dust/slopes halve intervals. Synthetics extend engine 300hr, hydraulic 250hr SUDT2. Reference 50-hour service intervals. Track hour meter dates religiously. Low-use annual regardless hours logged.

Key Takeaways

Core numbers: 2.9qt engine, 7.9gal hydraulic/trans, 1.3qt axle, 1.8gal coolant, 7.4gal fuel. Precise levels avert $500 failures; DIY halves annual costs.

💡 Buying Used? Compare Generations First

Not sure if you should buy the older generation or save for the newer model? Check our generation comparison guide for real prices, recalls, and sweet spot years.

Next Steps:1) Verify all levels level ground today 2) Stock HH150-32430, 70000-15241 filters, UDT2 3) Plan 50hr break-in service 4) Print capacity specifications table 5) Bookmark permanent reference

For complete Kubota maintenance schedules covering all fluid and filter services, explore our maintenance guide library. Visit Tractor Parts Central homepage