Fully Synthetic Engine Oil
Engineered for every engine. Every condition. BloomMax 5W-40 fully synthetic lubricant delivers fuel economy, deposit protection, and wear resistance - powered by virgin base oil and American technology.
Available Sizes.
Most of What You Buy Is Base Oil
An engine oil is base oil plus an additive package, and the base oil is the larger part by a wide margin. Additives get the marketing attention, but the base stock determines how the oil behaves when it matters — how readily it flows at start-up, how well it resists thinning as temperature climbs, and how long it lasts before oxidising.
That is why base oil origin is worth asking about. Virgin base oil is refined from crude specifically for lubricant use, so its composition is consistent from batch to batch. Re-refined oil is reprocessed used oil — cheaper, but capable of carrying over contaminants and inconsistent molecular structure. In markets where counterfeit and recycled lubricants circulate freely in familiar-looking packaging, an engine can be damaged by oil that looked entirely normal going in.
Bloom Max 5W-40 is a fully synthetic oil blended from virgin base oil and rated API SN, with an additive package built for deposit control, wear protection, thermal stability and reduced internal friction. Supplied in 1 litre and 4 litre packs.
Performance You Can Measure.
Extreme Heat Protection
Maintains viscosity and film strength even under the most demanding thermal conditions.
Deposit Protection
Advanced additive technology prevents sludge and varnish build-up for a cleaner engine.
Fuel Economy
Reduced internal friction delivers measurable fuel savings across city and highway driving.
Wear Protection
Virgin base oil formulation provides superior anti-wear performance for extended engine life.
Technical Details.
Engineered For.
Need Bulk Supply?
Contact our team for fleet orders, distributor pricing, or custom viscosity grades.
Get in Touch →Reading an Engine Oil Label.
Two markings carry almost all the meaning on an oil bottle: the SAE viscosity grade and the API service rating.
5W — the Cold Number
W stands for winter. This figure describes how thin the oil stays when cold, and a lower number means it reaches the bearings faster on start-up. Most engine wear happens in those first seconds before oil pressure builds, which is why the cold rating matters even in hot countries — engines still stand overnight.
40 — the Hot Number
This is viscosity at full operating temperature. A higher figure means a thicker, more resilient oil film between moving parts when the engine is hot and working hard — the condition that matters under load, in traffic, and in high ambient temperatures.
API SN — the Service Rating
The first letter gives engine type: S for spark-ignition petrol and gas engines, C for compression-ignition diesel. The second letter marks the standard level, advancing through the alphabet as requirements tighten. SN covers deposit control, oxidation resistance, wear protection and seal compatibility.
Multigrade Explained
A single-grade oil is either thin when cold or thick when hot, not both. A multigrade such as 5W-40 uses viscosity modifiers to behave like a thin oil at start-up and a thicker one at temperature — one oil covering the full operating range instead of a seasonal change.
Mineral, Semi-Synthetic or Fully Synthetic?
| Consideration | Mineral | Semi-synthetic | Fully synthetic (Bloom Max) |
|---|---|---|---|
| Molecular consistency | Varied | Partly uniform | Engineered uniform |
| Cold-start flow | Slowest | Improved | Fastest |
| Thermal stability | Lowest | Moderate | Highest |
| Deposit control | Basic | Good | Strongest |
| Service interval | Shortest | Longer | Longest |
Always meet or exceed the viscosity grade and API rating specified in the vehicle handbook. Fitting a lower specification to save cost usually shortens engine life rather than the oil's.
Common Questions
Bloom Max Engine Oil, Answered.
Viscosity grades, API ratings, base oil quality and distribution — the questions workshops and trade buyers ask most about Bloom Max lubricants.
What does 5W-40 actually mean?
It describes how the oil flows at two temperatures. The 5W is the cold rating — W is for winter — and a lower number means the oil stays thinner when cold, so it reaches bearings faster on start-up, when most engine wear happens. The 40 is the viscosity at full operating temperature, where a higher number means a thicker, more protective film under load and heat. A 5W-40 therefore flows freely on a cold start yet holds its film strength once hot — useful in climates with wide day-to-night temperature swings.
What does the API SN rating tell me?
API is the American Petroleum Institute service classification. The first letter indicates engine type — S for spark-ignition petrol engines, C for compression-ignition diesel. The second letter marks the standard level, advancing through the alphabet as requirements tighten. SN covers deposit control, oxidation resistance, wear protection and seal compatibility. Always meet or exceed the grade your vehicle handbook specifies.
Why does virgin base oil matter?
Base oil makes up most of what is in the bottle. Virgin base oil is refined from crude specifically for lubricant use, so its composition is consistent and predictable. Re-refined or recycled oil is reprocessed used oil, and it can carry over contaminants and inconsistent molecular structure. In markets where counterfeit and recycled lubricants circulate widely, base oil origin is one of the clearest quality differentiators — and one buyers should ask about.
What is the difference between fully synthetic, semi-synthetic and mineral oil?
Mineral oil is refined crude with naturally varied molecule sizes, which shear down and oxidise fastest. Semi-synthetic blends mineral with synthetic stock for a middle level of performance and price. Fully synthetic oil is engineered so molecules are uniform in size and shape, giving the best cold-start flow, thermal stability, deposit control and service life. Bloom Max 5W-40 is fully synthetic.
Can this oil be used in diesel engines or motorcycles?
Bloom Max 5W-40 is API SN rated, which is a petrol and gas engine specification. Tesla Power USA supplies dedicated products for other duties — heavy duty diesel oil for commercial diesel engines, gas engine oil for gas-fuelled applications, and a separate motorcycle oil formulated for the wet clutch and shared gearbox found in most bikes. Always match the product to the engine type rather than viscosity alone.
Can I distribute Bloom Max lubricants in my country?
Yes. Tesla Power USA appoints distributors, wholesalers and importers by territory, with West Africa and East Africa currently prioritised. Fleet orders, distributor pricing and custom viscosity grades are handled by the regional team, and lubricants pair naturally with the battery, tyre and car care ranges for workshop-facing distributors.
Explore the range
- Bloom Max heavy duty diesel oil
- Bloom Max motorcycle oil
- Bloom Max gas engine oil
- RestorX body & engine care
Trade buyers can review distributor partnership terms, register a warranty, or contact the regional team.
Download Brochures
Detailed product specifications, compliance data and technical drawings.