We are increasingly more persons to want to accomplish the routine service of our Cadillac CTS by themselves, obviously, the labour in mechanics is very costly and the least simple service can fairly quickly surpass 100€. The modern vehicles are more and more difficult and we can not accomplish all their routine service, but some acts like servicing its Cadillac CTS can be accomplished without too much complexity. We are going to help you today to select the best engine oil for your Cadillac CTS , this will enable you to do your oil change without any headache and to assure you an optimal engine unit actions. To get this done, firstly, we will discover how to choose the right engine oil for your Cadillac CTS , then, in a second step, which are the 3 best engine oils for your Cadillac CTS , and finally, we will end with some suggestions on how to choose your engine oil.


How to select the best engine oil for your Cadillac CTS

We will so begin our content with a small buying guidebook to help you select the best motor oil for your Cadillac CTS with peace of mind. To achieve this, we will check out the criteria that differentiate the sort of oil and then we will check out the different types of motor oil. No matter the reason, you should know that if you select your engine oil accurately, in addition to preserving it, you will decrease your consumption and your CO2 emissions.

The specifications that differentiate engine oils for Cadillac CTS?

The role of the engine oil in your Cadillac CTS is to lubricate your engine unit to ensure that all the gears in it can run properly , and to preserve the integrity of each of its elements. Furthermore, this oil, which will limit all friction, will have other tasks such as preventing corrosion, helping to dissipate heat in the engine unit and guaranteeing sealing . These oils can be bought in 5 litre cans. We will now check out the different criteria for purchasing engine oil for Cadillac CTS :

  • The cold viscosity of engine oil for Cadillac CTS (number in front of the letter “W”, which stands for “Winter”): This value will show the engine’s ability to start cold depending on the viscosity of the oil. 0W means -30°C; 5W means -25°C, 10W means -20°C and 15W means -15°C. It is therefore up to you to change it to the climatic conditions in which you drive your Cadillac CTS.
  • The hot viscosity of the engine oil for Cadillac CTS (value following the “W”): Value between 20 and 60, it is important to keep in mind that the higher the value, the thicker the layer of oil you will have when hot to protect your engine unit, and the lower the value, the less friction you will have when hot and therefore lower your consumption. Nevertheless, if you use your Cadillac CTS in the city, or with a sporty driving style, it’s better to protect it although hot.
  • The specifications : They are written on the back of the oil canister you can discover them such as “ACEA C1 – C4” or “VW 500. 01”, are only specifications of compatibility with different brands of cars, you have to verify in the manual of your Cadillac CTS that the oil in question is suitable for your engine unit.
  • Oil brands: Please take note that the brand should have very little impact in your judgement, there are enough objective specifications in the composition of motor oil for Cadillac CTS to avoid having to concentrate on a subjective criterion such as the brand, some car companies have partnerships and will suggest you on certain brands, but it is not necessary to stick to these tips.

The different types of engine oil for your Cadillac CTS

  • “Mineral” engine oils 15w40: They are known as mineral oils because they are principally made up of crude refined oil, which will give them maximum viscosity and therefore a thickness suitable for old engines that often consume oil. On the other hand, the truth that they are natural will bring about them to lose their lubricating properties more fairly quickly, so it will be necessary to shorten the intervals between oil changes.
  • Semi-synthetic 10w40: This oil has a good quality/price ratio and is said to be semi-synthetic because it is still made up of certain components that will improve its lifetime. It is thus appropriate for a polyvalent use of its vehicle. Moreover, it favours a simpler cold start than a mineral oil. Nevertheless, you should remember to change the oil every 10, 000km.
  • The “synthetic” oil 5w40: This type of oil is really adapted to the recent Cadillac CTS engines, obviously, the protection of the engine unit will be ideal and the cold start too. It is therefore a good choice either for people who drive in city centres, who have a sporty driving style, or who drive long distances and want to limit the frequency of their oil change.

The 3 best motor oils for Cadillac CTS

We now begin our second section in which we will concentrate on the best motor oils for Cadillac CTS , we will present our assortment and direct you to the best retailers so that you can make your choice in the best circumstances. We have made it a point to present only oils adapted to your Cadillac CTS, so you will not actually discover “10w40” in our selection.

Best Low-Cost engine oil for Cadillac CTS

We made the choice to select the two best engine oils for Cadillac CTS lowcost, so that regarding to your needs you can make your choice.

Castrol GTX 15W40

This quality oil will enable you to change or top up the oil level of your Cadillac CTS with complete peace of mind at an unbeatable price.

  • Value for money
  • Perfect if your engine unit begins to get miles on it.
  • Mineral quality.


  • Periodicity of emptying, about 10, 000km
  • Cold start capability if you live in a cold region

Mobil Super 3000 5W40

A prestigious brand that offers you a kit to do your oil change plus an additional 1 litre that you can use to verify the oil level of your Cadillac CTS.

  • A 100% synthetic oil that will last over time.
  • Suitable for intensive use of your vehicle.
  • Price.


  • Less suitable for older engines.

Best mid-range engine unit oil for Cadillac CTS

Mobil Super 3000 FE 5W30

This synthetic oil is unbeatable value for money and will protect your engine unit, turbo or injection.

  • High quality synthetic material that will enable you to space out your drains.
  • A price to do this interesting quality.
  • Suitable for all sort of pipes


  • Less suitable for older vehicles or vehicles with quite a lot of mileage.

Best premium motor oil for Cadillac CTS

Castrol Edge 5W30

A premium synthetic motor oil to protect your Cadillac CTS from friction, even in the worst conditions.

  • Top of the range engine unit oil ideal for all engines from Cadillac CTS
  • Startup under all conditions.


  • You’re not gonna have the ability to get the price.
  • Not ideal for older vehicles

Castrol Magnatec 0W30

An ultra-synthetic motor oil for your Cadillac CTS which will be adapted to the most demanding engines such as those equipped with Start and Stop.

  • Cold start under the worst conditions.
  • Suitable for the most demanding engines.
  • Ideal for engines equipped with Start and Stop


  • You’re not gonna have the ability to get the price.
  • Not ideal for older vehicles or engines with more than 200, 000 kilometers

A few suggestions on choosing the right engine unit oil for your Cadillac CTS

And to end this content, we will give you some suggestions on how to make good use of the motor oil in your Cadillac CTS, and make the right choice when you buy it:

    • Be aware that an open can of oil should be disposed of after one year and not be used anymore because it loses a good part of its capacity and may harm your engine unit.
    • Observe the suggestions of the oil manufacturers and car manufacturers and use only oils compatible with the engine unit of your Cadillac CTS


  • The oil change intervals announced by the engine unit oil manufacturer are important, do not exceed the mileage indicated on the canister between each oil change


To find more tips on the Cadillac CTS, take a look at the Cadillac CTS category.