Frequently Asked Questions - Lubricants

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? What are low ash lubricants? If the oil turns dark, is it bad? 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? Are there specific lubricants for gasoline and diesel vehicles? What are the differences between lubricants? What is the difference between oil and lubricant? What is the FAP or particle filter? Why put hydraulic fluid in my car? What do the coolant colors in a car indicate? Is it possible to change oil brands without affecting the engine? What is the right oil for your engine? Which lubricants are marketed by Repsol? What is mixed lubrication? 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?

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? 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? How do greases differ from industrial lubricating oils? What is power steering fluid and why is it so important? Types of power steering fluid

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

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? What lubricant must I use in a car with FAP? 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?

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

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? Does a car that has not been used for a long time need an oil change? If I see smoke in the exhaust port, am I burning oil? Why should I do the oil leveling in the sump? 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 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? How should lubricants be stored and handled? How do I know if the oil filter is damaged? Can two lubricants be mixed together in the same engine? How to detect low oil level in the steering of a vehicle? What problems can using the incorrect oil in the particulate filter cause?

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

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

What happens if we mix oils with different viscosity indexes? 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? Why are low viscosity lubricants used? Is a variation in viscosity recommended?

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

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 the difference between putting 15w40 and 20w50 oil? How does a diesel engine lubricant differ from an Otto engine lubricant? 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? 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 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 do I do if I still have unsolved questions?

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