You sit down in the car and your trousers pick up grease from the chassis. You walk through a freshly resurfaced street — and traces of asphalt and tar end up on your shoes and trousers. You sit on a bench that has just been repainted — suddenly you have tar stains. Grease, tar and asphalt stains are some of the toughest things ordinary laundry cannot handle. But with the right method, most of them can be removed. In this article — what really works, what is a myth, and when a garment is beyond saving.
How these stains differ from ordinary oil
Grease, tar and asphalt share one feature — they are mixtures of hydrocarbon compounds, usually petroleum-based. What makes them tricky:
- High viscosity — they bond to fibres far more strongly than ordinary vegetable oil
- Polymerisation — over time and with oxygen they become resistant to solvents
- Pigments — tar and asphalt contain natural black pigments that bind deeply
- Water-resistant — ordinary washing alone is largely ineffective
- Toxic compounds — some greases contain heavy metals or other hazardous additives
More on the difference from ordinary oils — in our oil stain guide. These stains call for a tougher approach.
Safety rules — first
These stains often require stronger chemicals. Before you start:
- Work in a ventilated room or outdoors
- Disposable gloves — to protect the skin on your hands
- Avoid eye contact with solvents
- Never mix different chemicals (chlorine + ammonia — dangerous fumes)
- Test on a hidden spot before the main treatment
- Children and pets — keep away from the work area
First steps (within the first hours)
Fresh tar or grease comes off much more easily than hardened material:
- NEVER wipe — you will rub it deeper into the fibre
- Harden it in the freezer — if it is still soft, put the garment in the freezer for 30 minutes. Hardened material is easier to scrape off.
- Remove mechanically — with the back of a knife or the edge of a spoon, scrape off as much of the surface layer as you can. Work from the edge of the stain towards the centre.
- Absorb the residue — cover with baby powder, cornstarch or another absorbent, leave for 30 min, then brush off
After this stage, 60–70% of the stain is usually already gone. Then we move on to wet methods.
4 methods by difficulty
Method 1: Butter or cooking oil (paradoxically)
An old but effective trick — tar dissolved by a substance with similar chemistry:
- After mechanical removal, put a teaspoon of butter or cooking oil directly onto the tar residue
- Massage gently with your fingers for 2–3 minutes
- Leave for 15–30 minutes — the fats in the butter "loosen" the tar from the fibre
- Wipe off with a paper towel
- Apply a strong dish soap (Fairy, Pril)
- Massage in, leave for another 15 minutes
- Wash at 40 °C with an enzyme detergent
Works on fresh and medium-aged tar / asphalt stains. Use on cotton and denim.
Method 2: WD-40 (a classic)
WD-40 is a mineral oil with solvents. Stronger than butter:
- After mechanical removal, spray WD-40 directly onto the stain
- Leave for 5–10 minutes
- Soak it up with a paper towel — you should see the stain "giving in"
- Repeat if necessary (2–3 rounds)
- Apply a generous amount of dish soap
- Massage in with a brush
- Wash at 40 °C with an extra rinse
Warning: WD-40 has its own smell that can stay in the fibre. Use only on cotton and denim, NEVER on delicate fabrics.
Method 3: Eucalyptus / tea tree
Natural alternatives. Essential oils contain terpenes that dissolve tar:
- Apply a few drops of eucalyptus or tea-tree oil directly onto the stain
- Leave for 10–15 minutes
- Massage in with a soft brush
- Apply dish soap
- Wash as usual
Suitable for fresh stains and more delicate fabrics (wool, silk — but always test on a hidden spot first).
Method 4: Specialised solvents (for the toughest cases)
Commercial products designed specifically for tar and grease:
- Goo Gone — popular, gentler than turpentine
- De-Solv-It — citrus-based, more biodegradable
- Turpentine — classic and effective, but with a strong smell
- White spirit — used by painters, aggressive
The principle is the same as with WD-40, just stronger products. Test on a hidden spot first!
Specifics by type of material
Engine oil / machine grease
The easiest case — at its core this is mineral oil with additives:
- Butter or dish soap as pre-treatment
- 30–40 °C wash with an enzyme detergent
- Repeat if necessary
Older oil stains may contain oxidised additives and heavier metals — then the WD-40 method works better.
Asphalt stains
Medium difficulty. Asphalt is a mix of petroleum products and mineral fillers:
- Harden in the freezer
- Mechanical removal
- WD-40 or eucalyptus oil pre-treatment
- Dish soap pre-treatment
- Wash at 40 °C
Tar stains (from trees)
Pine or spruce resin — natural but very sticky. Strategy:
- Harden in the freezer (a must — soft resin cannot be scraped off)
- Mechanical removal — the back of a knife
- Eucalyptus oil pre-treatment (terpenes dissolve natural resin perfectly)
- Dish soap pre-treatment
- Wash
Tar stains (from streets)
Bituminous tar — heavier than tree resin. Calls for stronger methods (WD-40, turpentine).
Paint stains (oil-based)
Quick rule: if the paint is oil-based, the strategy is similar to tar. If it is water-based, ordinary washing with pre-treatment is enough.
Tar (winter de-icer on roads)
In winter, Lithuanian roads are treated with de-icer (calcium chloride with additives). It leaves yellow stains on shoes and trousers. Strategy:
- Plain cold water
- Soak in vinegar (acetic acid neutralises the chloride)
- Wash with an enzyme detergent
Specifics for different fabrics
Cotton and denim
The most resistant. All 4 methods are suitable. You can use even stronger solvents if needed.
Synthetics (polyester)
Be careful with solvents — some can damage the fibre structure. Best: the butter method, eucalyptus oil. Avoid WD-40 and turpentine on more delicate synthetics.
Wool and silk
NEVER use aggressive solvents. Best:
- Hardening + mechanical removal
- Essential oils (eucalyptus, tea tree) — the natural choice
- A delicate detergent (NOT an enzyme one for wool)
- For tougher cases — take it to a dry cleaner
Leather items
A separate category. Never use water. Wipe with a dry cotton cloth and a small amount of eucalyptus oil. For tougher cases — see a leather-care specialist.
The stain is still visible after washing — what to do
A typical case: the stain looks like a "shadow" — the bulk of the tar has been removed from the surface, but pigment residue remains in the fibre:
- Repeat the pre-treatment method (the one that worked in the first round)
- Soak the garment in warm water with an enzyme detergent for 1–2 hours
- Wash as usual
- Sun-dry (UV helps reduce remaining pigment)
If after 2–3 rounds the stain is still visible, it most likely cannot be removed completely.
When the garment is truly lost
Honestly — some cases are irreversible:
- Dry tar or asphalt that is a week old and already polymerised
- The fibre is damaged after strong solvents (small holes appearing)
- The colour under the stain is permanently altered (especially on coloured fabric)
- After 3 attempts the result is going nowhere
Such garments are better repurposed (work clothes, a patch, a cleaning rag).
What NOT to do
- Never pour hot water — tar melts and spreads further
- Never iron — it sets the stain for good
- Never tumble-dry a garment with a visible stain
- Do not mix chemicals with each other
- Do not work bare-handed — some solvents irritate the skin
Prevention
Grease, tar and asphalt are usually unexpected accidents. But a few prevention rules help:
- Keep work clothes separate — special overalls for car repairs
- Protective impregnation — some products (Scotchgard) create a resistant layer that makes stain removal easier
- React quickly — a fresh stain is 5–10× easier to remove than a dry one
- Avoid freshly resurfaced areas — fresh asphalt often hardens within 24–48 hours
Frequently asked questions
Does butter really remove tar?
Yes, because of the similar chemistry. Both tar and the fats in butter are hydrophobic compounds. The butter fats "break" the bond between tar and fibre. A traditional trick that works.
Does diesel fuel work for removing tar?
It works, but:
- Strong, long-lasting smell in the fibre
- Not environmentally safe
- Can damage more delicate fabrics
Better to use specialised products (WD-40, eucalyptus oil).
My child got asphalt on new shoes. Is it worth saving them?
It depends on the value of the shoes. For cheap sports shoes, it is often cheaper to buy new than to invest the time and products. For premium leather shoes, always try to save them.
Is turpentine safe to use at home?
In a ventilated room — yes. Ventilate well, wear gloves. Do not use in homes with small children or allergy sufferers.
How long can I wait before trying to remove tar?
Best within 1–24 hours, while the tar has not yet stabilised. After 48–72 hours the chance of success drops dramatically.
Summary
Grease, tar and asphalt stains are among the toughest, but most of them can be removed with the right methods. The basic rules: harden, remove mechanically, use an oil / essential-oil pre-treatment, then a dish-soap pre-treatment, then a standard wash. Safety first (ventilated room, gloves, no mixing of chemicals). More on different stains — in our complete stain guide. For the main wash — Ecozyme enzyme detergent is ideal thanks to its lipases, which complement the oil / solvent pre-treatment.
