Frequently Asked Questions - Lubricants

Can I use car lubricant in my 4-stroke motorcycle? What is a lubricating oil? Can a lubricant reduce fuel consumption? Why do engines consume lubricant? Can it be avoided? Which lubricants are marketed by Repsol? What is mixed lubrication? What is the best lubricant? What is the best engine oil? What are the differences between lubricants? What is the difference between oil and lubricant? What are low ash lubricants? If the oil turns dark, is it bad? What is the aim of lubricants? Can synthetic oil be mixed with mineral oil? Are there specific lubricants for gasoline and diesel vehicles? What is the FAP or particle filter? Is it possible to change oil brands without affecting the engine? What is the right oil for your engine? Why put hydraulic fluid in my car? What do the coolant colors in a car indicate? What is the difference between A1 Standard and B1 Standard? What coolant should I use for my car? What coolant do I need for my car?

How do greases differ from industrial lubricating oils? Why is automatic transmission oil important? What is the appropriate antifreeze for the car? Types of power steering fluid What oil to use in hydraulic steering? What is the difference between antifreeze and coolant? Difference between dry clutches and wet clutches What is hydraulic fluid? What is power steering fluid and why is it so important? What are power steering oils for? What types of hydraulic oil exist? What is the difference between automatic transmission and manual transmission?

What does SAE 15w40 and other letters on the oil bottles stand for? What are the specifications of vehicle manufacturers?

What lubricant must I use in a car with FAP? How to choose the best steering fluid for your car How to control the car’s lubricant consumption? Can the choice of oil affect the particulate filter? Why is the car’s air conditioning oil important? What types of antifreeze are there? Can I replace a JASO-MA oil with a JASO-MB oil? Can I mix hydraulic oil and engine oil in a hydraulic system? Can transmission oil be used in hydraulic steering?

Why must we change oil? How does the oil condition affect the engine’s useful life? How far past the recommended oil change date can I go? Why does the engine oil get dirty? Do lubricants expire? Can oil refilling avoid oil replacement? What happens if we have a dirty lubricant? Can I simply refill the lubricant tank or do I have to change the lubricant? How often do I have to change the lubricant? How do high temperatures affect lubricant consumption? When and how to change the car's coolant? How often should I change the car’s oil? Can I refill the oil to avoid changing it? What happens if the oil turns black or dark in color in the car? Why does my car use more oil as time goes by?

What happens if I make a mistake in the car's oil? What could happen if two incompatible lubricants are mixed? How should lubricants be stored and handled? Can two lubricants be mixed together in the same engine? How do I know if the oil filter is damaged? How do I avoid excessive blue smoke when starting my 4-stroke motorcycle? If I see smoke in the exhaust port, am I burning oil? Does a car that has not been used for a long time need an oil change? Why should I do the oil leveling in the sump? The oil has turned black, does that mean I have to change it? Is it normal for water to come out of the tailpipe of a vehicle? What happens when engine oil and gasoil are mixed? How to know if the oil level is low? Is it correct to use water instead of coolant? How to detect bubbles in the lubricating oil? What happens if I don't change the car's oil filter? What happens if you drive with a low oil level in the car? What does white smoke coming from the tailpipe mean? What are the signs that the automatic gearbox is low on oil? What does black smoke coming from the tailpipe mean? How to detect low oil level in the steering of a vehicle? What should I do if there is oil in the coolant tank? What does the smell of burning car brakes indicate? What to do if I run out of coolant? What problems can using the incorrect oil in the particulate filter cause?

What is the reverse logistics system? What is a DPF/GPF or particle filter? What is a biodegradable oil? Do you carry out any recycling of containers at Repsol? Where is AdBlue put?

How is used oil managed at Repsol? What to do with used oil?

Why are low viscosity lubricants used? What is better? A high or low viscosity index? How can I know the viscosity of a lubricant when buying it? What is the viscosity of a lubricant? Is a variation in viscosity recommended? What happens if we mix oils with different viscosity indexes?

What is the difference between a synthetic lubricant and a mineral lubricant? Is one better than the other? Is it worth using synthetic oil instead of mineral oil? What are the lubrication regimes? What type of lubricants are there? Can you change from synthetic to mineral oil and vice versa? Why choose a synthetic base oil over a mineral base oil? What type of additives are there? Is a synthetic oil better than a mineral oil?

What is hydrodynamic lubrication? What is boundary lubrication? Can I avoid finding excess residue on the spark plug and ash on the piston? What is the used oil analysis service, ADLIS? What does API stand for? What is the difference between putting 15w40 and 20w50 oil? How does a diesel engine lubricant differ from an Otto engine lubricant? Is it good to add an extra additive to an engine? Do CNG engines dirty the lubricant more? What does SAE stand for? What lubricant should be used in a vehicle with turbocharger? What does PSA stand for? How do I know if the lubricating oil of my motorcycle meets the JASO standard? What is it and what does the Euro standard apply to? Which oils must be used in DCT gearboxes? What is the WLTP standard? What is AdBlue and why do diesel cars use it? Do A2 and A3 oils have the same performance?

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