Factory maintenance schedule OEM · verified
Normal service, condensed from the factory interval matrix.
| Every 30,000 mi | Oxygen Sensor (replace) |
| Every 50,000 mi | Timing Belt (inspect) |
Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1988 325E.
The 1988 BMW 325E is an E30-platform vehicle whose engine requires 4.3 quarts of 20W-50, 15W-50, or 10W-50 API SL oil for proper lubrication, reflecting the specific maintenance demands of this era of engineering. From a longevity standpoint, this model year occupies a strong position in the vehicle's reliability history, recording only 9 total owner complaints and just 2 recalls. Because the top complaint category is limited to "Equipment" rather than critical mechanical failures, this indicates that the 1988 325E represents a fundamentally sound platform for researchers to study, largely free of systemic powertrain faults.
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 OE oil filter 11421707779. 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 oil filter | 11421707779 |
| Engine air filter | 13721720861 |
| Fuel filter | 13321268231 |
| Spark plug | 12121279599 |
| Front wiper blades | 61611387678 |
| Serpentine belt | 11511711091 alt 32421706597 |
| Thermostat | 11531710953 alt 11531265084 |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 4.3 qt of 20W-50 / 15W-50 / 10W-50 API SL engine oil, GL-5 in the differential, DOT 4 brake fluid.
| Brake Fluid | DOT 4 |
| Differential Gear Oil | GL-5 |
| Differential Gear Oil Capacity | 3.6 Pints |
| Engine Coolant | ETHYLENE GLYCOL |
| Engine Oil | 20W-50 · API · 15W-50 · 10W-50 · 5W-30 |
| Engine Oil Capacity | 4.3 qt |
| Power Steering Fluid | ATF |
Normal service, condensed from the factory interval matrix.
| Every 30,000 mi | Oxygen Sensor (replace) |
| Every 50,000 mi | Timing Belt (inspect) |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Owner complaints about the 1988 BMW 325E dominate in one area — the equipment, 3 of 9 reports (33%), well ahead of the next concern. None of this vehicle's 2 recall campaigns target the equipment, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 2 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the equipment pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.
All 9 complaints on record, top 5 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 2 campaigns on record for this vehicle.
THE MALFUNCTION OR FAILURE OF A COOLANT SYSTEM COMPONENT RESULTS IN SIGNIFICANTLY INCREASED COOLANT TEMPERATURE AND A RESULTING INCREASE IN SYSTEM PRESSURE. Remedy: DEALERS WILL INSTALL A THERMOSTATIC BYPASS VALVE IN THE ENGINE COMPARTMENT TO CONTROL COOLANT TEMPERATURE IN THE HEATER CORE. ALSO, A NEW DESIGN RADIATOR CAP WILL BE INSTALLED, TO…
THE OIL DIPSTICK TUBE ATTACHING BRACKET MAY HAVE BEEN BENT DURING PRODUCTION OR SCHEDULED MAINTENANCE, REDUCING THE CLEARANCE BETWEEN THE DIPSTICK RING AND THE THROTTLE BELLCRANK LEVER. Remedy: REQUIRES THE CUTTING OFF THE OUTBOARD END OF THE THROTTLE BELLCRANK LEVER TO PROVIDE NECESSARY CLEARANCE.
Showing 1 of 1 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| B510819 | 2024-01-16 | Electrical System | The basic conditions for initializing the power windows are not met. |
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.
4.3 qt of 14 degrees F TO 122 degrees F: 20W-50 API SL OR GREATER, -4 degrees F TO 104 degrees F: 15W-50 API SL, -22 degrees F TO 68 degrees F: 10W-50 API SL OR GREATER, -40 degrees F TO 23 degrees F: 5W-30 API SL OR GREATER, per the factory manual.
NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.