Frequently Asked Questions - Lubricants

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

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

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

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 I replace a JASO-MA oil with a JASO-MB oil? Can the choice of oil affect the particulate filter? Why is the car’s air conditioning oil important? Can I mix hydraulic oil and engine oil in a hydraulic system? What types of antifreeze are there? Can transmission oil be used in hydraulic steering?

Why must we change oil? Can I simply refill the lubricant tank or do I have to change the lubricant? Why does the engine oil get dirty? What happens if we have a dirty lubricant? Do lubricants expire? How often do I have to change the lubricant? How does the oil condition affect the engine’s useful life? How do high temperatures affect lubricant consumption? 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? When and how to change the car's coolant? How often should I change the car’s oil? How far past the recommended oil change date can I go? Can oil refilling avoid oil replacement?

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

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

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

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

What is the difference between a synthetic lubricant and a mineral lubricant? Is one better than the other? Can you change from synthetic to mineral oil and vice versa? What are the lubrication regimes? What type of lubricants are there? Is it worth using synthetic oil instead of mineral oil? 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? Is it good to add an extra additive to an engine? What is the used oil analysis service, ADLIS? What does SAE stand for? What lubricant should be used in a vehicle with turbocharger? What is the difference between putting 15w40 and 20w50 oil? Which oils must be used in DCT gearboxes? What is the WLTP standard? What does PSA stand for? How do I know if the lubricating oil of my motorcycle meets the JASO standard? What is AdBlue and why do diesel cars use it? What is it and what does the Euro standard apply to? Do A2 and A3 oils have the same performance? What does API stand for? How does a diesel engine lubricant differ from an Otto engine lubricant?

What do I do if I still have unsolved questions? How do I unsubscribe from an already contracted service? How do I unsubscribe from the Repsol Registry? Why don't I see all the services I have contracted? How do I sign up for a new service?

My password is correct, but I can’t access How to change my account to the new Registry: Step by Step Can I edit my personal details? What do I do if I can’t remember my username or password? How do I change my password?