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Engine oil for auto

Choose a quick way to find the right motor oil
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Physical and chemical properties

Engine Oil for car makers:
  • BMW
  • VW
  • FORD
  • AUDI
  • OPEL
  • FIAT

Motor oil is a technical liquid in the car engine lubricating system. It lowers friction of power unit parts, due to which its lifetime limit increases, operation efficiency improves and fuel consumption is reduced. It promotes cooling of engine components, cleans them from dirt and carbon deposit, protects against corrosion.

Engine oils classification

  1. SAE. It is based on viscosity characteristics of oils at different temperatures. It is developed by the community of motor transport engineers SAE International. Due to this classification, all lubrication materials can be divided into winter, summer and all-season ones.
  2. API. According to the classification of American Petroleum Institute, all lubrication materials can be divided into the following groups: S – for petrol power units, C and F – for diesel ones. According to engine features, each of them is divided into service categories also marked with letters. Products of SN, CK-4 and FA-4 service categories comply with the latest requirements.
  3. ACEA. European Automobile Manufacturers Association distinguish 3 categories of lubricants according to operation characteristics:
    1. А/В. For diesel and petrol engines of different configurations.
    2. C. For new power units with catalysts or particulate filters.
    3. E. For diesel engines of cargo vehicles and special vehicles.

Types of motor oils according to composition

In classifying basic oils for power units, American Petroleum Institute takes into account not only their composition but also manufacturing technique, thus dividing all products into 5 groups:

  1. Products made by petroleum distillation without additional treatment.
  2. Petroleum distillates which underwent additional refinery.
  3. Petroleum distillates made by the method of structured refinery with preliminary multiple hydrocracking using hydrogen.
  4. Short-chain polyalphaolefins made by chemical synthesis.
  5. Chemically synthesized polyether-based products.

More common classification involves division of all products according to composition into 3 groups:

  1. Mineral. They include lubricants based on I and II groups according to API. They are inexpensive and fit engines with high mileage well.
  2. Semi-synthetic. Their composition includes no less than 25% of III, IV or V group oils. They are more effective than mineral ones, and cheaper than synthetic.
  3. Synthetic. Their composition includes no less than 30% of III, IV or V group products. They have an extended replacement interval and dissolve additives well.

Buycarparts.co.uk: high quality oils for your car

You will find more that 2,000 car oils of 13 brands in our online-shop. Motul, Liqui Moly, Castrol, Febi Bilstein, Startol, Vaico, Swag, Elf, Aral are among the most popular manufacturers. Due to numerous promotions and discounts, here you can buy motor oils at the most affordable price.

Note: replacement of oil should be performed at a service station.

  • Best prices
    Buycarparts.co.uk guarantees high-quality Car oil at very attractive prices.
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    Free shipping within the UK applies to orders over £ 140 and excludes bulky items, tyres, or exchange parts.
  • Wide choice
    We currently have over 500,000 car parts in our product range.
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ratings and reviews

Excellent company, very good prices for my vehicle compared to the dealer or any other sources I found online. Great service level regular contact and checks to ensure it is the right part for your model of vehicle before it is dispatched. All English speaking and you can call and speak to a real person instead of a machine. Dispatched quickly and for a small price a 100 day return policy. I will use this company again and highly recommend them to anyone who is tired of being over charged and suffering with poor levels of service. Well done your company is a credit to the car industry.


cheap, good quality and fast delivery

Frequently asked questions
Trim / Protective Strip, sidewall
Switch, mirror adjustment
Outside Mirror
  • O. 2021-07-22
  • i would like to know if the picture of the product is the real item and does it come with the a glass?

Clutch Kit
  • G.T. 2021-07-20
  • Hi there... I was wondering whether this kit includes flywheel bolts? Thanks.

End Silencer
  • P. 2021-07-20
  • Will end silencer 17.126 IZAWIT FIT MY FORD ESCORT ESTATE reg number X2XXXXX?

  • Y.K. 2021-07-19
  • Hi, Could you confirm this is OEM for VIN WBAFE82050LXXXXXX? BMW X5 E70 4.8i What is the delivery cost? Thanks

Wheel Bearing Kit
Track widening
Outside Mirror
Drive Shaft
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