The Nissan RD28T is a 2,826 cc, inline‑six turbo‑diesel engine produced between 1988 and 1996. It features an SOHC, 12‑valve design with indirect injection and a mechanically controlled turbocharger, delivering robust low — end torque for commercial and off — road applications. Output is approximately 85 kW (116 PS) and 275 Nm, prioritising durability over peak power.
Fitted primarily to the Nissan Patrol (Y60) and Nissan Homy/Caravan (E24), the RD28T was engineered f…
Nissan
Production years 1988–1996 predate formal Euro standards; compliance based on national regulations of the era (VCA UK Type Approval records for period vehicles).
The Nissan RD28T is a 2,826 cc inline‑six turbo‑diesel engineered for SUVs and light commercial vehicles (1988-1996). It combines indirect injection with a single turbocharger to deliver strong, low-RPM pulling power. Designed for pre‑Euro regulatory environments, it prioritises mechanical simplicity and ruggedness over emissions refinement.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,826 cc | |
Fuel type | Diesel | |
Configuration | Inline‑6, SOHC, 12‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 86.0 mm × 81.0 mm | |
Power output | 85 kW (116 PS) @ 4,300 rpm | |
Torque | 275 Nm @ 2,400 rpm | |
Fuel system | Mechanical indirect injection (Zexel or Nissan pump) | |
Emissions standard | Pre-Euro (National regulations) | |
Compression ratio | 21.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single, mechanically controlled wastegate (IHI or Mitsubishi) | |
Timing system | Chain-driven | |
Oil type | API CD or CE (SAE 15W-40) | |
Dry weight | Not specified in available OEM docs |
The Nissan RD28T was used across Nissan's Y60 and E24 platforms with longitudinal mounting. This engine received minor platform-specific adaptations-different engine mounts and ancillary bracketry for the Homy-but no major revisions occurred during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
The RD28T's primary reliability consideration is turbocharger oil seal failure, with elevated incidence in high-mileage or poorly maintained units. Nissan workshop data indicates turbo rebuild or replacement is a common service requirement, while owner reports frequently cite oil consumption linked to seal wear. Adherence to maintenance schedules, particularly oil quality and change intervals, is critical for sustained operation.
Analysis derived from Nissan technical bulletins (1988-1996) and aggregated owner workshop reports. Repair procedures should follow manufacturer guidelines.
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The RD28T is renowned for its rugged, overbuilt mechanical design. Its cast-iron block, non-turbocharged origins, and simple SOHC layout make it fundamentally reliable. Longevity is excellent with basic maintenance, particularly regular oil changes and timely turbo service. Many examples have surpassed 400,000 km in demanding conditions.
The most frequent issues are turbocharger oil seal failure causing blue smoke and oil consumption, wear or misadjustment of the mechanical fuel injection pump affecting performance, and glow plug failures causing cold-start difficulties. Age-related cooling system leaks are also common.
The RD28T engine was primarily fitted to the Nissan Patrol (Y60) and Nissan Homy/Caravan (E24) from 1988 to 1996. It was the turbocharged diesel option for these robust vehicles, offering significantly more torque than the naturally aspirated RD28.
Minor power gains are possible through injection pump calibration and boost pressure adjustment. Significant tuning is limited by the engine's indirect injection design and modest internals. It's best appreciated for its original, torquey, and indestructible character rather than outright power.
Fuel economy is moderate, reflecting its size and torque focus. Expect approximately 11.0-13.0 L/100km (22-26 mpg UK) in mixed driving and 9.0-11.0 L/100km (26-31 mpg UK) on the highway for a well-maintained Patrol. Economy is heavily influenced by vehicle weight and driving style.
No. The Nissan RD28T is generally considered a non-interference (or 'free-wheeling') engine. If the timing chain were to fail or jump, the pistons and valves would not collide, preventing catastrophic internal damage, though the engine would stop running.
Nissan originally specified API CD or CE grade oil, typically SAE 15W-40. A modern, high-quality diesel oil meeting ACEA B3 or B4 specification is a suitable and often recommended replacement for better overall protection, especially for the turbocharger.
Comprehensive technical documentation and regulatory references
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NISSAN Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
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