Everything you need to know about our products, ordering, private labelling, and technical specifications — answered by our engineering team.
Oil that is thicker than the application requires may circulate too slowly during start-up and may not reach critical components quickly enough. In hydraulic systems, higher-than-needed viscosity reduces response and efficiency. In rotating equipment, it increases churning losses and operating temperature because the system must work harder to move the lubricant. The correct question is not "which oil is thicker?" but "which viscosity grade is correct for the application?" — based on OEM recommendation, operating temperature range, duty cycle, and equipment design.
Not automatically. VI measures how much an oil's viscosity changes with temperature — a higher VI means less viscosity change across temperature swings, not that the oil is inherently thicker or universally better. A lubricant with a higher VI performs better where equipment faces both cold starts and high operating temperatures, but VI is only one part of lubricant performance. Base oil quality, additive chemistry, oxidation stability, and shear stability all matter. Two oils can have similar VI values and still behave very differently in service.
No. Colour can vary due to base oil type, additive chemistry, dye, or formulation style. Darker oil is not automatically inferior and lighter oil is not automatically superior. What matters far more is the product's actual technical profile: viscosity grade, NLGI grade, thickener type, additive system, temperature capability, water resistance, and application suitability. Colour mainly helps with product recognition, not performance validation.
No. Used oil darkens for several reasons — contamination, oxidation by-products, soot loading, and suspended debris. In some systems, darkening is partly a sign that the oil is doing its job by carrying contaminants in suspension. However, very dark, opaque, sludgy, or foul-smelling oil can also indicate the oil is aged or contaminated beyond acceptable limits. Oil condition should be judged by viscosity retention, contamination level, oxidation, water ingress, and wear debris — not colour alone.
Generally, no. Synthetic oil does not inherently cause leaks and is compatible with common seal materials when the system is in sound condition. What often happens is that older seals are already worn, hardened, or damaged, and switching to a better-performing lubricant makes those existing weaknesses more visible. Many older systems can benefit from properly selected synthetic lubricants. The right approach is to review viscosity, seal condition, compatibility, and the actual equipment application before changing over.
Fixed intervals are a useful baseline, but lubricant life depends on much more than the calendar. Temperature, contamination, filtration, duty cycle, load, and environment all affect oil life — so two machines using the same oil may not need the same drain interval. The stronger approach is to combine fixed intervals with real operating conditions and, where practical, oil analysis and inspection. Changing too early wastes money; changing too late increases wear risk.
No. The label "multipurpose grease" often creates false confidence. Grease performance depends on thickener type, base oil viscosity, NLGI grade, operating temperature, speed, water exposure, and relubrication interval. A grease that works well in a general chassis point may be unsuitable for a high-speed electric motor, wet bearing, or high-temperature industrial duty. Using the wrong grease can shorten bearing life rather than simplify maintenance.
Not safely as a rule. Grease compatibility depends on thickener type, base fluid, and the resulting mixed properties after blending. When incompatible greases are mixed, they may soften, harden, bleed oil, or lose lubricating consistency — leading to leakage, starvation, or rapid component failure. The safer approach when switching products is to purge the old grease thoroughly before introducing the new one. Appearance and NLGI grade alone are not valid compatibility tests.
"More grease is safer" is one of the most expensive lubrication myths in industry. When too much grease is pushed into a bearing cavity, the rolling elements churn through the excess, creating heat and pressure. This can result in seal failure, grease blowout, overheating, and even roller slipping and smearing damage. Grease is meant to provide the right lubricating film — not to completely pack every space. Relubrication quantity and interval should match the bearing design and operating conditions.
No. ISO VG only indicates the viscosity band — it does not tell you how the oil performs in terms of anti-wear protection, oxidation stability, cleanliness, filter life, air release, or component protection. Modern hydraulic systems may use high-pressure pumps, close-clearance servo valves, and components sensitive to deposits, varnish, and foaming. Two oils in the same ISO VG class can deliver very different maintenance outcomes. Buyers should evaluate anti-wear system, oxidation resistance, thermal stability, demulsibility, air release, and OEM requirements — not just the viscosity number.
Our engineers are available to help with product selection, application analysis, or any question not covered here.