Precision Oil Dispensing & Metering for Trade & Industrial Applications

Shop Macnaught Control Guns for accurate oil dispensing, fluid measurement & controlled lubricant delivery across Australian automotive workshops, fleet facilities, machinery servicing, agricultural maintenance & industrial operations.

Macnaught's oil control gun range covers mechanical-meter dispensing guns, digital oil control guns, preset metered guns, rigid-extension guns, flexible-extension guns & high-flow oil dispensing equipment for compatible workshop lubrication systems.

The correct control gun should be selected around oil viscosity, required flow, metering method, fill volume, hose connection, extension type & pump-system performance.

For workshops managing broader fluid-measurement requirements, Testing & Measurement Tools provides a directly related pathway into trade measurement equipment.

What Are Macnaught Control Guns?

Macnaught Control Guns are professional oil dispensing tools fitted at the delivery end of compatible lubrication systems to control, measure & direct lubricant into vehicles, machinery & industrial equipment.

They provide the technician with direct control over the final stage of the oil-transfer process.

Macnaught's current Control Gun range includes:

► Mechanical-meter oil dispensing guns
► Digital oil control guns
► Electronic-meter control guns
► Digital preset oil control guns
► Rigid-extension oil guns
► Flexible-extension oil guns
► Automatic non-drip nozzle configurations
► High-flow oil control guns
► Trigger-lock configurations
► Batch-total metering
► Accumulative-total metering

The range therefore serves anything from straightforward workshop oil dispensing through to repeat servicing where delivered lubricant quantity needs to be measured accurately.

Macnaught's current HG-series digital control guns provide electronic batch plus accumulative totalisers with stated accuracy up to ±0.5% for lubricating oils on relevant models.

Where wider workshop maintenance equipment is required, Automotive & Mechanical provides another direct route into professional servicing equipment.

Why Choose Macnaught Control Guns?

The control gun is the final point between the oil-distribution system & the machine.

That makes flow control, metering accuracy, nozzle performance & filler-point access important to the quality of the servicing process.

Macnaught offers multiple gun formats so workshops can select according to how lubricant is actually dispensed.

► Mechanical metering – practical where a robust non-digital quantity display is preferred
► Digital metering – provides clear electronic dispensing data across compatible models
► Preset dispensing – selected guns allow the required delivery quantity to be programmed before dispensing
► Rigid extensions – provide controlled positioning around accessible fill points
► Flexible extensions – improve access around recessed or obstructed fillers
► Non-drip nozzles – selected models help control residual oil after dispensing
► Trigger locks – support sustained dispensing where appropriate
► High-flow models – available for larger-volume servicing requirements
► Multiple totalisers – selected digital models provide both batch plus accumulated quantity tracking

A more advanced gun isn't automatically the better purchase.

The strongest choice is the gun that matches the pump, oil, flow requirement plus servicing procedure.

For technicians regularly working across vehicle servicing bays, Vehicle Diagnostic & Testing Tools provides a relevant cross-sell into wider workshop diagnostics.

For real Australian workshop context, A Day With An Automotive Mechanic Peninsula provides useful trade-focused reading.

Common Applications

Macnaught Control Guns suit professional environments where compatible lubricants need to be dispensed cleanly, accurately & repeatedly.

Common applications include:

► Automotive workshops
► Fleet servicing
► Truck maintenance
► Heavy-vehicle workshops
► Agricultural machinery
► Earthmoving equipment
► Construction plant
► Industrial machinery
► Manufacturing facilities
► Gearbox servicing
► Transmission servicing
► Engine oil dispensing
► Hydraulic oil servicing
► Workshop bulk-oil systems
► Machinery top-ups
► Preventative maintenance
► Metered lubricant delivery
► High-volume oil servicing

A workshop servicing passenger vehicles can require a very different control gun from an operation filling heavy machinery with larger oil quantities.

Selection should therefore reflect the actual fill volume, oil viscosity, pump capacity plus service frequency.

For machinery-maintenance environments where lubrication forms part of broader drivetrain servicing, Drive Accessories & Maintenance provides another relevant cross-sell.

Businesses managing recurring workshop equipment requirements can also use On-Site & Workshop Services for trade-focused support.

Product Selection Guide

Choosing the correct Macnaught Control Gun starts with the servicing procedure rather than the display technology.

1. Decide whether you need metered dispensing

Ask whether the technician needs to know the exact quantity delivered during servicing.

Metering can be particularly useful for:

► Engine-oil servicing
► Fleet maintenance
► Gearbox filling
► Machinery servicing
► Repeat lubricant fills
► Workshop lubricant control
► Internal oil-use tracking

Where quantity is already measured through another reliable system, a simpler dispensing gun can remain appropriate.

2. Choose mechanical or digital metering

Mechanical-meter control guns provide quantity measurement without relying on an electronic display.

They can suit:

► Traditional workshop systems
► Straightforward servicing
► Users preferring mechanical register equipment
► Applications where digital features aren't required

Digital control guns provide electronic batch plus accumulated quantity information.

They can suit:

► Higher-throughput workshops
► Fleet servicing
► Repeated known-volume fills
► Workflows requiring clearer quantity visibility

The correct choice should follow the servicing environment.

3. Consider preset dispensing

Macnaught's current HG60 preset electronic control gun allows compatible users to program delivery quantities up to 99.9L.

Preset functionality can suit jobs where technicians repeatedly dispense known volumes.

Potential applications include:

► Fleet servicing
► Dealer workshops
► Machinery maintenance
► Fixed oil-change procedures
► Repeat gearbox fills

The preset function shouldn't replace final fluid-level checks where the vehicle or machinery procedure requires them.

4. Choose rigid or flexible extension

The dispensing extension determines how easily the technician reaches the filler.

Choose a rigid extension where:

► The filler is directly accessible
► Controlled nozzle positioning matters
► A straight approach is available

Choose a flexible extension where:

► The filler is recessed
► Surrounding machinery restricts access
► The nozzle needs to approach from an angle
► A straight rigid extension is impractical

Fill-point geometry can matter more than gun price.

5. Check flow requirements

Macnaught control guns cover different flow requirements.

For example, the current Australian HG20R-012E-01 digital control gun is specified for flow rates up to 30LPM.

High-flow Macnaught/Lubemate configurations can extend substantially beyond that for compatible heavy-duty systems.

Consider:

► Typical oil quantity
► Pump output
► Hose diameter
► Hose length
► Oil viscosity
► Filter restriction
► Fill-point size
► Service frequency

Maximum flow should suit the application rather than become the sole selection criterion.

6. Check oil viscosity

Higher-viscosity oil moves differently through a dispensing system than lower-viscosity engine oil.

The HG20R-012E-01 is specified for compatible oils up to SAE 140.

Oil viscosity affects practical:

► Flow
► Pump performance
► Hose restriction
► Meter response
► Dispensing speed
► Fill time

Always check the exact gun specification against the lubricant being handled.

7. Confirm pressure compatibility

The control gun needs to remain compatible with the complete oil system.

The HG20R-012E-01 is currently specified to a maximum pressure of 1,000psi.

Check:

► Pump pressure
► Hose rating
► Gun rating
► Swivel rating
► Meter rating
► Extension
► Nozzle

The system shouldn't be evaluated from one component in isolation.

8. Check the connection

Current Macnaught control guns use different inlet connections according to model.

The HG20R-012E-01 uses a 1/2" BSP male inlet swivel.

Before ordering, confirm:

► BSP size
► Male or female connection
► Hose fitting
► Swivel requirement
► Pump compatibility
► Existing workshop system

For workshops maintaining fluid systems across industrial equipment, Power Transmission provides another relevant supporting category.

Expert Tips for Accurate Oil Dispensing

A metered oil gun only provides useful information when the complete dispensing system remains clean, serviceable & correctly configured.

► Confirm the lubricant first. Don't rely solely on hose position or drum colour.
► Reset the batch meter before servicing. Prevent the previous delivery quantity from confusing the current job.
► Keep nozzles clean. The nozzle is the final component before oil enters the machine.
► Inspect non-drip valves. Oil continuing to leak after dispensing deserves attention.
► Check the extension. Replace bent, damaged or leaking rigid plus flexible extensions.
► Inspect swivels. A worn swivel can create leakage plus awkward hose handling.
► Check meter accuracy when performance appears abnormal. Don't continue relying on
questionable readings.
► Monitor oil flow. Unexpectedly slow dispensing can indicate restrictions elsewhere in the system.
► Avoid overfilling. Delivered quantity should follow the equipment servicing specification.
► Keep different lubricants clearly identified. Prevent the correct quantity of the wrong oil being dispensed.
► Inspect trigger operation. Make sure locking or preset functions behave correctly.
► Record recurring faults. Repeated leakage or flow issues can identify wider system problems.

For broader workshop upkeep, Tool Maintenance Kit provides a useful cross-sell.

Industrial Shed's Tool & Equipment Care also provides support around frequently used trade equipment.

Mechanical vs Digital Oil Control Guns

Both control oil flow while providing quantity measurement but they suit different workshop preferences.

Mechanical-meter guns can offer:

► Straightforward mechanical quantity measurement
► Familiar operation
► No dependence on electronic display functions
► Practical workshop oil dispensing

Digital-meter guns can offer:

► Clear electronic display
► Resettable batch totals
► Accumulated totals
► High measurement accuracy on relevant models
► Easier quantity visibility during servicing

Macnaught's HG-series digital products specify accuracy up to ±0.5% for compatible lubricating oils.

The strongest choice depends on how the workshop records plus controls lubricant delivery.

Standard vs Preset Control Guns

A standard metered gun tells the technician how much oil has passed through the gun.

A preset control gun goes further by allowing a target quantity to be entered before compatible dispensing begins.

Macnaught's HG60-01 provides:

► Preset delivery
► Automatic dispensing
► Automatic shut-off
► Batch counter
► Accumulative totaliser
► Multiple dispense memory settings
► ±0.5% stated accuracy for lubricating oils

Preset delivery becomes particularly useful where the same known fill volumes occur repeatedly.

Technicians should still verify that the programmed quantity matches the vehicle or machinery service requirement before dispensing.

High-Flow Oil Control Guns

Higher-flow control guns are designed around applications where greater oil quantities need to move efficiently.

Macnaught's broader current control-gun family includes high-flow products for heavy-duty applications.

High-flow dispensing can suit:

► Heavy plant
► Mining equipment
► Large machinery
► Fleet workshops
► Industrial servicing
► High-capacity oil fills

The gun alone doesn't determine final flow.

System performance also depends on:

► Pump output
► Oil viscosity
► Hose diameter
► Hose length
► Filtration
► Meter
► Extension
► Nozzle

A high-flow gun attached to restrictive upstream equipment won't automatically deliver high-flow performance.

Rigid vs Flexible Oil Gun Extensions

Access to the fill point is one of the most practical control-gun selection factors.

Rigid extensions can provide:

► Direct nozzle positioning
► Easier control around open filler points
► Stable dispensing geometry

Flexible extensions can provide:

► Better access around obstructions
► Easier routing into recessed fillers
► Greater positioning flexibility

Neither extension is universally superior.

Choose according to the equipment technicians service most frequently.

Oil Metering & Workshop Fluid Accountability

Metered oil dispensing can help workshops create a clearer record of lubricant delivery.

This can support:

► Vehicle service quantities
► Fleet oil usage
► Machinery servicing
► Lubricant inventory control
► Workshop job tracking
► Repeat fill procedures

A meter measures how much fluid passes through the dispensing gun.

It doesn't confirm:

► Correct lubricant selection
► Machine capacity
► Final oil level
► Equipment condition
► Correct filler location

Those remain part of the technician's servicing procedure.

For technicians developing stronger workshop systems, The Apprentice's First Tool Kit: What You Actually Need provides practical supporting reading.

Control Guns Within a Complete Oil Dispensing System

A Macnaught Control Gun operates as one component within a wider oil-delivery path.

A typical system can include:

Bulk oil storage → pump → filter → hose reel → dispensing hose → control gun → extension → nozzle → machine

Poor dispensing performance can therefore originate anywhere within the system.

Possible causes of low flow include:

► Pump limitation
► High oil viscosity
► Filter restriction
► Undersized hose
► Long hose runs
► Meter restriction
► Damaged extension
► Nozzle restriction

Diagnose the complete system before assuming the control gun is faulty.