Patrol
Overview
Sold as DX, ST, ST-L and Ti across a very long run (GU1 through GU8). Part-time dual-range 4WD with live axles front and rear (coil-sprung wagon) — old-school, immensely capable and the darling of the serious touring/aftermarket scene. Engine choice is everything on a GU: the gear-timed TD42 and the petrol TB48 are revered as near-indestructible, while the ZD30 (especially the early 2000-2007 direct-injection version) earned a 'grenade' reputation for melting pistons and over-boosting. The brief early RD28ETi 2.8 diesel (1998-2000) is gutless and best avoided. Rock-solid chassis, massive parts and accessory support, but pre-purchase engine history matters more here than almost any other 4WD.
Engines & variants
4.2L TD42 / TD42Ti diesel
Pros
- Gear-driven timing - nothing to snap, legendary longevity
- Simple mechanical indirect-injection diesel, easy to work on
- 400,000km+ routinely with basic care
- Most sought-after GU engine - holds value
- Easily and safely turbo'd if NA
Cons
- NA version is genuinely slow and struggles loaded/towing
- Factory turbo (Ti) examples are rare and command a premium
- Older mechanical injection - smoky if pump/injectors tired
- Needs healthy cooling system or head-gasket risk
Known problems
3.0L ZD30DDTi turbo diesel
Pros
- Far more economical and easier to drive than the 4.2
- Strong torque for size
- Common-rail (2007+) is materially better than the early DI
- Reliable for years when boost/EGR are managed
Cons
- Early direct-injection (2000-2007) has a 'grenade' reputation - melted/cracked pistons
- Over-boosting from a sticky VGT actuator is the classic killer
- Soot/oil build-up in the intake causes uneven cylinder fuelling and hot-spots
- Many owners fit aftermarket boost protection as insurance
Known problems
4.8L TB48DE petrol
Pros
- Genuinely bulletproof - the most reliable GU engine
- Smooth, strong, torquey big-six petrol
- Cheap to buy because petrol scares people off
- Responds very well to LPG (and many are dual-fuel)
Cons
- Extremely thirsty on petrol alone
- Range is poor unless on gas or with long-range tank
- LPG-converted examples vary in install quality
Known problems
4.5L TB45E petrol
Pros
- Reliable early petrol six, simple and tough
- Cheapest way into a GU wagon
- Takes LPG well
Cons
- Thirsty like the TB48 but with less power
- Only on the earliest GU1 cars - all very high km now
- Superseded by the better TB48 in 2001
Known problems