vs
Engine oil RAVENOL or IDEMITSU
I am using the Ravenol for last 3 changes, oil consumption at 5K change intervals is less than 1/2 quart (about 1/4 qt on last change) and hoping this may lead to less carbon build up.
Pros: less oil consumption
Cons: carbon build up
Vehicle:
Volkswagen Passat
Mileage: 5000 km
You don't need to add any more additives to modern day oils. You said you will be using Mazda 0W-20 oil? This is one of the best 0W-20 oils on the market. It is made by Idemitsu for Mazda. It has very high Viscosity Index of 221. Most 0W-20 oils are around 170. This means it is one of the lightest 0W-20 at start up. This is what you want in the winter.
Pros: high Viscosity Index
Vehicle:
Mazda
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