Gorilla Power GP6500E-DF 6.5kW Dual Fuel Generator: Full Review and Buying Guide

When you’ve outgrown a 3.5kW inverter generator but don’t want the bulk and expense of a full 8kW unit, the sweet spot is around 6kW — and that’s exactly where the Gorilla Power GP6500E-DF sits. With 6,000W continuous and 6,500W peak on dual fuel (petrol or propane), it handles the heaviest mobile catering setups without the overkill of a generator you’ll never run above half load.

The GP6500E-DF is part of Gorilla Power’s dual-fuel range made by Equipmart Ltd in Merseyside. It shares the same chassis and feature set as the GP5500E-DF but adds an extra 1,000W of headroom — the difference between comfortably running a two-group espresso machine alongside a full kitchen, or running out of capacity on your busiest trading days. This guide covers the manufacturer’s specifications, what it can realistically power, propane running costs, and how it compares to alternatives in the MobCater range.

Full Technical Specifications

These specifications come directly from the Gorilla Power instruction manual published by Equipmart Ltd.

Three features stand out for mobile caterers. First, the wireless remote start means you can fire up the generator from inside your van or trailer without walking around to the control panel — useful on cold mornings and at events where the generator is positioned away from your serving area. Second, economy mode automatically reduces engine speed at lighter loads, which cuts both fuel consumption and noise. Third, the low oil shut-off protects the engine if you forget to check levels during a busy trading day.

One thing to note: the panel includes two 120V 16A sockets alongside the main 240V 16A outlet. The 120V sockets are designed for building site tools and aren’t used in standard UK mobile catering setups — your equipment runs on 240V. For most traders, the single 240V 16A socket feeds a distribution board that powers everything in the van.

What Can the GP6500E-DF Power on Propane?

At 6,000W continuous, the GP6500E-DF is one of the most powerful generators in the MobCater range. Here’s what a demanding mobile catering setup looks like:

That’s a full coffee van with a two-group commercial espresso machine, a microwave for hot food, and every ancillary — running at 81% of the continuous rating with over 1,100W of headroom. You could add a second fridge, a blender for smoothies, or an electric griddle without hitting the limit.

The GP6500E-DF comfortably handles:

• Coffee vans with a two-group espresso machine plus full ancillaries and a secondary cooking appliance
• Burger vans combining LPG cooking with electric fryers, griddles, or a bain marie
• Multi-appliance food trucks with fridge/freezer, extraction fan, cooking equipment, and high-draw electrical items running simultaneously
• Event caterers who need headroom for unexpected equipment additions or power-hungry warming stations

You’d need something bigger if:

• You’re running a three-group espresso machine (4,000W+) alongside a full kitchen — consider the GP8000iE (8kW)
• You need inverter-quality clean power — the GP6500E-DF is a conventional AVR generator. For sensitive electronics, look at the GP3500i or GP3800iE inverter range

You could save money with something smaller if:

• Your total running load is under 4kW — the GP5500E-DF (5kW continuous) or the GCE5000B (4.2kW continuous) would be more fuel-efficient and lighter
• You only need 2–3kW — a Greengear GE-3000 or GP3500i costs far less to buy and run

Propane Running Costs

The Gorilla Power manual doesn’t publish a specific LPG consumption figure for the GP6500E-DF, but based on comparable 6–6.5kW dual-fuel generators and extrapolating from the GP5500E-DF‘s known consumption, propane usage at 75% load is approximately 1.4–1.6 kg per hour. At typical UK refillable propane prices (£2.00–£3.50/kg):

A standard 13 kg Calor propane cylinder lasts approximately 8.7 hours at 75% load — just over one full trading day. For regular five-day trading, a 19 kg cylinder (giving roughly 12.7 hours at 75%) or two 13 kg cylinders with a changeover valve is the practical setup. The economy mode helps significantly at lighter loads by dropping engine speed, reducing consumption closer to the 50% figures even when the generator has capacity to spare.

Compared to running on petrol, propane typically saves 10–20% on fuel costs and dramatically reduces maintenance overhead — less carbon fouling means cleaner oil, longer spark plug life, and fewer mid-season servicing headaches.

Why the GP6500E-DF Over the GP5500E-DF?

The GP5500E-DF and GP6500E-DF share the same chassis design, feature set (wireless remote, economy mode, low oil shut-off), and dual-fuel capability. The differences are:

The GP6500E-DF gives you an extra 1,000W continuous for just 2 kg more weight. The trade-off is size — it’s noticeably larger (850mm long vs 710mm). If space in your van or trailer is tight, measure first. But if you have the room, the extra headroom means you can add equipment without worrying about overloading the generator. The fuel tank and oil capacity are identical, which means similar running costs at the same percentage load — but the GP6500E-DF at 75% load is producing 4,500W versus the GP5500E-DF’s 3,750W at the same load percentage and similar consumption.

Fuel Switching — How It Works

The GP6500E-DF supports automatic fuel switching between petrol and propane. According to the manufacturer’s instructions:

• Switching from propane to petrol: Open the fuel choke valve and close the gas valve on the propane bottle. The generator automatically switches to petrol mode.
• Switching from petrol to propane (Method 1): Turn off the generator, close the fuel choke valve, drain remaining petrol from the carburettor via the drain screw, then open the gas valve and restart.
• Switching from petrol to propane (Method 2): Close the fuel choke valve and let the generator run until it uses all remaining petrol and shuts down. Then open the gas valve and restart.

For mobile catering, most traders start on propane and stay on propane all day. The petrol capability is really a backup for emergencies — if your propane runs out unexpectedly or you’re trading somewhere without easy access to a propane exchange. The 25-litre petrol tank gives substantial emergency runtime, but propane is the better everyday fuel: cleaner combustion, no stale fuel problems during off-season storage, and the same supply chain as your LPG cooking equipment.

Maintenance Schedule

From the Gorilla Power instruction manual — these intervals apply to all models in the dual-fuel range:

Running on propane reduces several of these maintenance demands. Propane produces less carbon residue than petrol, so spark plugs stay cleaner longer, oil stays in better condition between changes, and the carburettor doesn’t suffer from varnish buildup during storage. If you’re running exclusively on propane, you can reasonably extend the spark plug inspection intervals — but stick to the oil change schedule regardless of fuel type.

Installation and Safety

The GP6500E-DF needs the same safety setup as any generator used for mobile food trading:

• Ventilation — never run inside your van or trailer. The manual specifically warns that operating a generator indoors can be fatal within minutes from carbon monoxide. Position outside with exhaust pointing away from your serving area and neighbouring traders.
• Propane connection — connect the pressure regulator to your propane cylinder. Most UK propane bottles use a regulator set to 2.8 kPa (28 mbar) delivery pressure. Ensure the hose is firmly connected to the brass barbed gas hose fitting before opening the gas valve.
• RCD protection — mandatory for UK food trading. Use an RCD between the generator and your distribution board.
• Earthing — connect the ground terminal to an earth rod, especially on hard standing (tarmac, concrete). The generator has a dedicated ground terminal on the panel.
• Clearance — maintain a minimum distance of 1.5 metres from other objects, as stated in the manual’s safety warnings.
• Cold weather starting — in cold conditions, the manual recommends pressing the enrichment button a few times before starting to aid ignition on propane.

Who Should Buy the GP6500E-DF

The GP6500E-DF is the right generator if:

• You need 5–6kW continuous power — enough for a two-group espresso machine plus a full kitchen setup with multiple electrical appliances running simultaneously
• You want dual-fuel flexibility to run on propane day-to-day with petrol backup for emergencies
• Wireless remote start matters — you want to fire up the generator without leaving your van
• You’re planning to grow your setup and want headroom for adding equipment later without changing generator
• You need economy mode to save fuel and reduce noise during quieter periods

The GP6500E-DF is not the right generator if:

• You need inverter-quality clean sine wave power for sensitive electronics — this is a conventional AVR generator. Consider the GP3800iE or GP8000iE inverter range instead
• Space is critical — at 850 × 565 × 620mm and 93kg, it’s substantially larger than an inverter generator. Measure your storage space before buying
• Your load is consistently under 3kW — you’d be running an oversized generator at low efficiency. A Greengear GE-3000 or GP3500i would cost less to buy and run
• Noise is your primary concern — open-frame generators in this power class are louder than enclosed inverter models. Position it as far from your serving window as your cable run allows

For the complete range of generators available for mobile catering, see our ultimate guide to choosing the best LPG generator — it covers every model we stock, with side-by-side comparisons and load calculations for different trading formats.

Frequently Asked Questions

What is the running wattage of the GP6500E-DF?

The GP6500E-DF delivers 6,000W continuous (running) power and 6,500W peak (maximum) power on both petrol and propane. The continuous rating is the figure that matters for mobile catering — it’s the sustained output your equipment will draw from throughout a trading day. The peak rating covers momentary startup surges from motors in fridges and grinders.

Can the GP6500E-DF run a two-group espresso machine?

Yes — comfortably. A two-group commercial espresso machine like the Fracino Contempo draws around 3,000W. That’s exactly half the 6,000W continuous rating, leaving 3,000W for a grinder, fridge, lighting, till, microwave, and other ancillaries. Even with a full coffee van setup totalling 4,800W+, you still have over 1,000W of headroom.

Does the GP6500E-DF come with a wireless remote?

Yes. The GP6500E-DF includes wireless remote start as standard, alongside recoil (pull-cord) and key-operated electric start. The remote lets you start and stop the generator from a distance — practical when the generator is positioned behind your van or trailer away from the serving area.

How heavy is the GP6500E-DF?

93 kg according to the manufacturer’s specification. That makes it a two-person lift. It comes with a wheel kit and handles for moving it on flat ground, but you’ll want a ramp or a second pair of hands to load it into a van or onto a trailer. For comparison, the smaller GP5500E-DF weighs 91 kg — not a meaningful difference.

What’s the difference between the GP6500E-DF and the GP5500E-DF?

The GP6500E-DF produces 6,000W continuous versus the GP5500E-DF’s 5,000W continuous — an extra 1,000W of headroom for 2 kg more weight. The GP6500E-DF is physically larger (850×565×620mm vs 710×465×485mm). Both share the same features: dual fuel, wireless remote, economy mode, and low oil shut-off. Choose the GP6500E-DF if you run or plan to run a two-group espresso machine with multiple ancillary appliances, or if you want extra headroom for future equipment additions.

Is the GP6500E-DF an inverter generator?

No. It’s a conventional open-frame generator with an AVR (Automatic Voltage Regulator). The power output is standard 240V/50Hz — perfectly adequate for all catering equipment including espresso machines, fridges, grinders, microwaves, and cooking appliances. If you specifically need clean sine wave power for sensitive electronics (laptops, sound desks, medical equipment), you’d want an inverter generator like the GP3800iE instead.

How do I switch the GP6500E-DF between petrol and propane?

The generator supports automatic fuel switching. To switch from propane to petrol: open the fuel choke valve and close the gas valve — the generator switches automatically. To switch from petrol to propane: close the fuel choke valve, let the remaining petrol run out (or drain the carburettor), then open the gas valve and restart. For mobile catering, most traders run exclusively on propane and keep the petrol option as emergency backup.