15 Products
GUNK
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Gunk: understand the range before choosing
Gunk is a long-established cleaning and degreasing brand associated with automotive, garage and hard-surface jobs. The current UK collection is concentrated around engine degreasers, traffic film removers, driveway and pressure-washer cleaners, plus a citrus hand cleaner. These formulas differ in strength, application and removal, so the exact container label and current safety data—not the Gunk name alone—must control dilution, surface compatibility and protective measures.
AutoMotoPart currently lists 15 Gunk items. The largest Gunk groups are 8 maintenance entries, 6 valeting entries, 1 janitorial & hygiene entry. Gunk totals can change, so a category count is orientation rather than proof that a particular reference suits a vehicle, workplace or job. The exact Gunk listing, its current technical information and the item in front of you must agree.
What the Gunk page actually covers
| Product group in this range | Current entries | Selection focus |
|---|---|---|
| Maintenance | 8 | Confirm exact formula, contamination, substrate, pack size, dilution, dwell, agitation, removal, PPE and waste route. |
| Valeting | 6 | For valeting products verify vehicle finish, wash equipment, water pressure, local runoff controls and working concentration. |
| Janitorial & Hygiene | 1 | For hand cleaner use only the skin-specific product and retain access to washing and first-aid information. |
Eight entries are classified as maintenance, six as valeting and one as janitorial or hygiene. Eight titles mention engine degreaser, but foam aerosol, conventional aerosol, trigger, brush-on, bulk and Ultra formats are not interchangeable by default. The two Driveway Cleaner sizes likely share a named family, while High Pressure TFR, TFR Concentrate and Heavy Duty TFR remain distinct references whose stated working ratios must not be merged.
Build a reliable shortlist
Describe both the soil and the surface before choosing. Road film on a commercial vehicle, baked oil on a cool engine, a fresh stain on sealed concrete and old contamination in porous tarmac need different methods. Then decide whether the product will be brushed, sprayed, foamed or pressure-applied and assess exposure to mist, splash, vapour and contaminated runoff.
| Check | Why it matters | Useful evidence |
|---|---|---|
| Contamination | Oil, grease, road film and general dirt need different chemistry and dwell | Source, age, area and severity of deposit |
| Substrate | Paint, rubber, plastic, alloy, concrete, asphalt and timber respond differently | Maker's care data and a small compatibility test |
| Concentration | Concentrates can damage surfaces or people if guessed | Exact Gunk label, measuring equipment and water volume |
| Application | Aerosol, trigger, brush and pressure washer create different exposure | Ventilation, pressure, lance and overspray controls |
| Sensitive parts | Water or chemical entry can harm electrical, intake and bearing areas | Vehicle procedure and careful masking |
| Waste | Removed oil can make wash water controlled or hazardous waste | Drain map, containment and local disposal instructions |
If the current label does not name the intended material or cleaning equipment, obtain technical confirmation rather than increasing dilution strength or pressure. Historic Gunk directions from another market may describe a different formula. Keep the exact UK product code with the current safety data sheet for workplace use.
Engine aerosols, trigger sprays and brush-on liquids
Engine Degreaser Foam Aerosol is intended to cling for contact time, while the conventional Engine Degreaser Aerosol and Ultra Spray are separately named products. Shake, distance, dwell, ventilation and rinsing can therefore differ. Aerosols need ignition control and must not be sprayed onto a hot or running engine. Avoid battery terminals, alternators, exposed connectors and air intake paths unless the precise product and vehicle instructions allow contact.
Brush-on one- and five-litre products allow local mechanical agitation without aerosol mist, and the twenty-five-litre or five-litre Ultra packs suit larger controlled jobs. Decant only into compatible, clearly labelled equipment; never use food or drink containers. Work from less sensitive lower areas with a soft brush, keep solution out of wiring and catch trays, and dry the bay fully before reconnecting or starting anything disturbed.
Traffic film remover concentrates
The current evidence describes High Pressure TFR as a non-caustic concentrate with a wide working-dilution range and Heavy Duty TFR at a different stated ratio. Those figures belong to their exact references. Water hardness, soil, wash system and surface temperature can change the method, but do not strengthen a mix beyond the label. Use calibrated dosing rather than counting capfuls into an unknown tank.
Pre-wet or apply to a dry surface only as the directions specify, work out of hot sun and prevent concentrate or foam drying. Use a pressure system with a suitable electrical supply, residual-current protection and maintained hoses. Keep the jet away from people, tyres at close range, seals, camera apertures, decals and damaged paint, and stand so rebound mist does not expose the operator or bystanders.
Driveway Cleaner and Pressure Washer Power Spray
Driveway Cleaner appears in one- and two-litre sizes and is described for oil staining on driveways, garage floors, paths and patios, with dilution mentioned for asphalt and tarmac. Identify the paving material and finish before use; older asphalt, coloured sealers, resin surfaces and porous stone may need specialist guidance. Absorb fresh oil first so chemical cleaning does not spread the contaminant across a larger area.
Pressure Washer Power Spray is separately listed for hard surfaces including concrete, tarmac, block paving, brickwork and timber decking. Match it to the washer's detergent system and the surface maker's limits. Use a broad low-risk test setting and increase only within instructions. High pressure can erode joints, lift coatings, raise timber fibres and drive oil deeper, so cleaning power is not simply a matter of bringing the nozzle closer.
Runoff, workplace exposure and waste
HSE warns that vehicle cleaning and degreasing substances can harm through skin or eye contact and inhaled vapour or mist. Read the current safety data sheet, provide ventilation, control exposure at source and use compatible gloves, eye protection, clothing or respiratory protection determined by the assessment. A pressure washer creates mist and electrical risk, requiring suitable equipment inspection and protection.
Plan containment before starting. Block or protect inappropriate drains, collect sludge and absorb free oil, then dispose of contaminated liquid and materials through local or workplace arrangements. Do not assume a water-soluble or biodegradable cleaner makes petroleum residue safe for a surface-water drain. Clean tools and PPE separately and wash before eating or drinking.
Citrus Hand Cleaner and completion checks
Gunk Citrus Hand Cleaner is the only product here intended for use on skin. Follow its own amount, rubbing, rinsing and storage directions, and stop if irritation develops. It does not justify bare-hand contact with engine degreaser or TFR. Never clean hands with aerosol, solvent, fuel or concentrated surface product, and do not rely on hand cleaner instead of suitable gloves and work practices.
After an engine-bay job, remove masking, check connectors and hoses, account for tools and ensure the area is dry before starting through the vehicle procedure. After exterior or driveway cleaning, inspect for residue, surface change and slippery areas and keep people away until safe. Record the Gunk product, dilution and waste route so any unexpected effect can be traced accurately.
From identification to a checked result
| Stage | Good practice for this range | Mistake to avoid |
|---|---|---|
| Assess | Identify soil, material, sensitive components, exposure and drainage | Starting with the strongest concentrate |
| Prepare | Read label and SDS, cool equipment, mask, ventilate and contain runoff | Discovering a surface drain after rinsing |
| Measure | Use the exact product ratio and compatible application equipment | Copying a dilution from another TFR |
| Clean | Respect dwell, agitation, pressure and removal directions | Letting chemical dry or using excessive jet pressure |
| Close | Collect waste, inspect surfaces, dry components and record the method | Starting an engine with masking or moisture left in place |
Retain the labelled Gunk container and safety data until waste has been handled and the cleaned equipment or surface has been checked. For repeat professional work, document the precise product code, measured concentration, contact time, PPE and containment rather than recording only the brand name.
Reading real Gunk references
The Gunk names below are examples from the current range and show why the complete description matters. They are not universal Gunk recommendations and should not be treated as a fitment list. Within Gunk, a shared family word can conceal a different dimension, connector, material, pack format, operating condition or installation side.
| Example listing | What to verify beyond the name |
|---|---|
| High Pressure TFR - Concentrate - 5 Litre | Exact High Pressure TFR code, current dilution range, wash system, vehicle finish and runoff controls |
| Driveway Cleaner - 2 Litre | One- or two-litre Driveway Cleaner family, paving material, stain type, test patch and containment |
| Engine Degreaser Foam Aerosol - 500ml | Foam aerosol directions, cool dry engine, electrical masking, ventilation, dwell and required rinse |
| Engine Degreaser & Cleaner - 1 Litre | One-litre water-soluble cleaner, brush or wipe method, material compatibility and oily waste |
| TFR - Concentrate - 25 Litre | Twenty-five-litre TFR code, measured dosing, vehicle wash equipment and concentrate handling |
| Gunk Heavy Duty - TFR - 25 Litre | Heavy Duty TFR reference, its own stated dilution, commercial-vehicle surface and pressure method |
| Driveway Cleaner - 1 Litre | One-litre Driveway Cleaner, asphalt or tarmac boundary, absorbent pre-clean and residue collection |
| Pressure Washer Power Spray - 5 Litre | Five-litre Power Spray, washer detergent compatibility, surface pressure limit and rebound mist |
The page contains repeated sizes and related names, so retain the full description and product code. A 25-litre TFR concentrate and 25-litre engine degreaser serve different stages; a foam aerosol and brush-on liquid create different exposure and removal needs even when both target engine grime.
Common errors around Gunk products
- Using one Gunk dilution ratio for a different TFR, degreaser or surface cleaner.
- Spraying a hot or running engine or working near sparks, flames or unprotected electrics.
- Flooding an intake, connector, alternator, sensor or component excluded by vehicle instructions.
- Increasing pressure until paint, joints, seals, asphalt or timber begins to lift.
- Allowing oily wash water to enter a surface drain, soil or watercourse.
- Assuming water-soluble or biodegradable wording removes the need for waste control.
- Using engine degreaser, aerosol or TFR to clean skin.
- Starting equipment before masking is removed and all affected areas are dry and inspected.
Gunk questions and answers
Q: What Gunk products are on this page?
A: The range contains engine degreasers, TFR concentrates, driveway cleaner, pressure-washer solution and citrus hand cleaner.
Q: Are all Gunk engine degreasers the same?
A: No. Foam, aerosol, trigger, brush-on, bulk and Ultra references need their own labels and methods.
Q: Can engine degreaser be used on a hot engine?
A: No. Switch off, allow it to cool and follow the exact product and vehicle preparation instructions.
Q: What should be protected in an engine bay?
A: Check the vehicle method and protect excluded intakes, electrics, sensors, ignition parts and other water-sensitive areas.
Q: Can one TFR dilution be used for every product?
A: No. Measure the current ratio for the exact High Pressure, standard or Heavy Duty reference.
Q: Is stronger TFR always more effective?
A: No. Excess concentration can increase exposure, residue and surface damage without improving the controlled result.
Q: Can Driveway Cleaner be used on tarmac?
A: Only through its current dilution and surface directions after a test, because asphalt and coatings vary.
Q: Is Power Spray suitable for every pressure washer?
A: Confirm detergent-system compatibility, electrical safety, lance limits and the intended surface before use.
Q: Can oily rinse water go down a drain?
A: Do not assume so; contain it and follow local or workplace waste rules for oil and chemical residue.
Q: What PPE is needed?
A: Use the label, safety data and risk assessment to select ventilation, gloves, eye protection, clothing and any respiratory control.
Q: Can Gunk Citrus Hand Cleaner replace gloves?
A: No. It is for directed skin cleaning after exposure controls, not permission for bare-hand chemical contact.
Q: What should be checked after engine cleaning?
A: Remove masking, reconnect anything disturbed, dry thoroughly, inspect wiring and hoses, and start only through the vehicle procedure.
