MC-Bauchemie Donnitil Oil Ex
MC-Bauchemie’s ready-to-use degreaser that lifts oil and grease stains off concrete, screed and precast surfaces — without grinding or roughening the substrate.
What is it?
A ready-to-use, water-rinseable cleaning agent (previously sold as MC-Entöler) formulated specifically to draw oil, grease and hydraulic-fluid staining out of concrete, screed, render/plaster and precast concrete surfaces.
Where is it used?
RMC batching yards, precast casting yards, basement and podium parking decks, workshop and loading-bay floors, and any exposed or cosmetic concrete surface marked by engine oil, hydraulic fluid, diesel spillage or grease.
Why use it?
It pulls oil and grease out of the surface without grinding, shot-blasting or acid-etching the concrete, so the substrate’s finish, texture and residual strength stay intact — a real advantage on cosmetic/exposed concrete and on floors headed for a repair mortar or coating where roughening isn’t wanted.
How is it applied?
Poured onto the dry, contaminated surface and worked in with a broom, brush or scrubber (a paintbrush for vertical faces); left to react for about 15 minutes without drying out, then scrubbed and rinsed off thoroughly with water. Stubborn or old stains can be treated again once the substrate has dried fully, and a hot-water/steam rinse helps on persistent contamination.
About MC-Bauchemie Donnitil Oil Ex
MC-Bauchemie built its reputation in India on structural repair mortars, waterproofing membranes and flooring systems — but the same German engineering discipline shows up in a much smaller, more workaday product like Donnitil Oil Ex. It sits in the manufacturer’s Concrete Cosmetics range, a line dedicated to the un-glamorous job of keeping concrete looking and performing the way it should after it leaves the pour. Oil and grease staining is a constant, low-level headache on Indian construction sites: a hydraulic hose leak around a boom pump, gearbox drips under a transit mixer parked overnight, or a fork-lift battery station leaking onto a warehouse slab. None of it threatens the structure directly, but it looks bad, it can fail a client handover inspection, and — more importantly for anyone specifying repair work — oil contamination is one of the most common, and most overlooked, reasons a repair mortar or floor coating debonds.
Space Arc stocks Donnitil Oil Ex less as a stand-alone retail item and more as the correct first step before other MC-Bauchemie work — a de-greasing pass ahead of an MC-DUR flooring system, a protective coating, or a repair-mortar application wherever the substrate history includes oil or diesel exposure. It’s also genuinely useful on its own for RMC plant housekeeping, precast yard cleanup and basement parking refurbishment, where the brief is simply “get the floor clean again” without resurfacing the whole slab.
The technical insight
Donnitil Oil Ex works as a surface-acting degreasing/emulsifying formulation rather than a solvent stripper — it’s designed to be worked into the contaminated concrete, left to react for around 15 minutes, then rinsed away with water, carrying the emulsified oil with it. That’s the useful part of the chemistry; the honest limitation, stated in MC-Bauchemie’s own technical data sheet, is that it’s a surface treatment. Oil or grease that has migrated more than about 1 cm into the concrete’s pore structure may not come out completely even with repeated applications — a real possibility on old RMC yards or workshop floors where a leak has been dripping onto the same spot for months. For a specifier, the practical takeaway is to treat Donnitil Oil Ex as the first, cheapest option on a contaminated floor, but to budget for localised surface removal (scarifying or scabbling the worst-affected patches) as a fallback where the staining is old and deep — particularly if a repair mortar or coating has to bond to that exact spot afterward.
Where it is used
- Removing hydraulic-fluid and engine-oil drip stains from RMC batching plant and transit-mixer parking areas
- De-greasing basement and podium parking slabs before repainting, sealing or line-marking
- Cleaning oil-contaminated concrete, screed or plaster ahead of a repair mortar or protective coating, to protect bond
- Restoring the look of exposed or architectural concrete marked by vehicle or machinery leaks
- Degreasing precast elements — kerbs, pipes, blocks, panels — contaminated during casting-yard handling
- Cleaning diesel and lubricant spills on workshop, loading-bay and warehouse floors
- Spot-degreasing small ferrous parts and hand tools before preservation treatment
- Pre-treatment step ahead of industrial flooring recoats where legacy oil staining threatens adhesion
Key advantages
- Ready to use straight from the canister — no on-site mixing, dilution guesswork or batching errors
- Short ~15-minute reaction time keeps floor downtime low on live sites
- Rinses off with plain water — no solvent handling or disposal complications on site
- Doesn’t require grinding, shot-blasting or acid-etching, so cosmetic and exposed-aggregate finishes are preserved
- Can be reapplied on heavy contamination without damaging the substrate
- Doubles up for degreasing small metal parts and tools, not just concrete
- Backed by an established German manufacturer with a documented, dated technical data sheet
- Simple broom/brush/scrubber application — no spray rigs or specialist equipment needed
Limitations & considerations
- Surface treatment only — MC-Bauchemie’s own data sheet flags that oil which has penetrated beyond roughly 1 cm into the concrete may not be fully removed even with repeat treatment
- Requires good ventilation, particularly in enclosed basements and podium decks — not a walk-away product
- Classified as a hazardous substance under EU/DIN regulation, so PPE and SDS compliance on site are non-negotiable
- Performance depends heavily on how old and how deep the staining is; fresh spills clear far more easily than months-old baked-in leaks
- It’s a cleaning/cosmetic treatment, not a repair or waterproofing product — it won’t recover any strength the concrete lost to prolonged oil exposure
- MC-Bauchemie doesn’t publish a separate India-market TDS for this item at present; Space Arc sources it through the brand’s India supply chain and shares the applicable data sheet with every order
Selection & best practice
Trial the product on a small, inconspicuous patch first to gauge dwell time and scrubbing effort for that particular stain. Keep the surface wet through the roughly 15-minute reaction period — don’t let it dry out — then work it with a stiff or coarse-bristle brush before rinsing thoroughly with water; a hot-water or steam rinse helps lift stubborn, older contamination. For heavy staining, plan on two to three passes, letting the substrate dry fully between each. If the treated area is going to carry a repair mortar or coating afterward, don’t skip a bond/adhesion check — residual oil, even where it isn’t visible, can still undermine adhesion.
Specifications
| Product type | Ready-to-use degreasing cleaner for oil/grease-contaminated concrete (formerly marketed as MC-Entöler) |
| Coverage (flat surfaces) | approx. 250 ml/m² per treatment pass (substrate/contamination dependent) |
| Reaction / exposure time | approx. 15 minutes |
| Reference test conditions | 21°C ± 2°C, 50% relative humidity (lab basis for consumption & timing figures) |
| Pack size | 10 litre canister |
| Storage life | minimum 12 months, cool & dry, in unopened original packaging |
| Quality management | Manufactured under a DIN EN ISO 9001-certified QM system |
| Effective penetration depth | contamination beyond approx. 1 cm into substrate may not be fully removable |
| Application tools | broom / brush / scrubber (horizontal surfaces); brush (vertical surfaces) |
Industry use cases
Ready-mix concrete (RMC) plants
Clearing hydraulic-fluid and engine-oil drip stains around mixer trucks, pumps and batching lines to keep yard floors presentable and safe.
Residential & commercial real estate
Degreasing basement and podium parking slabs stained by vehicle leaks before repainting or re-marking bays.
Precast concrete manufacturing
Cleaning oil contamination off cast units picked up during yard handling, before dispatch or finishing.
Industrial flooring & warehousing
De-greasing old, oil-marked slabs as the prep step before a repair mortar or protective floor coating goes down.
Fleet, logistics & workshop facilities
Routine cleaning of diesel and lubricant spill stains on loading-bay and workshop floors.
Frequently asked questions
Will Donnitil Oil Ex remove old, deep-set oil stains completely?
Can I use it on exposed or architectural concrete without damaging the finish?
How soon can I apply a coating or repair mortar after using it?
What pack size is it sold in, and how much do I need?
Is it safe to use in a closed basement parking area?
Does Space Arc supply and apply this in Delhi NCR and beyond?
How we position MC-Bauchemie Donnitil Oil Ex
Within MC-Bauchemie’s own Concrete Cosmetics range, Donnitil Oil Ex sits alongside Donnitil Rust Ex(in) — the equivalent treatment for rust and iron-oxide staining — and cleaners like Donnitil BGR 81 and Donnitil 3X; cleaned metal parts are typically finished off with Intaktin as a preservative. Used together, that’s a full care-and-cleaning line rather than a one-off product. On the competitive side, Fosroc’s closest equivalent is its Chemical Degreaser, a solvent-based product built for the same job — stripping oil and grease from floors before Nitoflor-class coatings and screeds go down. Specifiers already standardised on Fosroc’s flooring systems may lean toward that product; Donnitil Oil Ex remains the better-documented, water-rinseable choice when the concrete is cosmetic/exposed or when the job is already anchored to MC-Bauchemie’s repair or coating systems.
Fosroc Chemical Degreaser — Specifiers already standardised on Fosroc’s flooring systems, or who want a solvent-based degreaser validated specifically for pre-treating floors ahead of Nitoflor-class coatings, may prefer Fosroc Chemical Degreaser over the water-rinseable Donnitil Oil Ex.
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