Originally Posted by OilUzer
You got a lot of miles on that car. Isn't only couple of years old?
What's C3? Is it diesel equivalent of A3/B4?
I bought 2 5qt of Casterol GTX Magnatec 10W30 Full Synthetic but haven't used it yet. Trying to get rid of some of my old dino first. I used to use Castrol GTX dino white bottles and still have a quart left. I may have to mix it with some Chevron Supreme to get rid of it. It maybe api sm or sl
A3/B3 - Stable, stay-in-grade Engine Oil intended for use in Passenger Car & Light Duty Van Gasoline & Diesel Engines
with extended drain intervals where specified by the Engine Manufacturer, and for severe operating conditions as
defined by the Engine Manufacturer.
A3/B4 Stable, stay-in-grade Engine Oil intended for use at extended Drain Intervals in Passenger Car & Light Duty Van
Gasoline & DI Diesel Engines, but also suitable for applications described under A3/B3.
C3 - Stable, stay-in-grade Engine Oil with Mid SAPS-Level, intended for use as catalyst compatible Oil at extended
Drain Intervals in Vehicles with all Types of modern Aftertreatment Systems and High Performance Passenger
Car & Light Duty Van Gasoline & DI Diesel Engines that are designed to be capable of using Oils with a minimum
HTHS Viscosity of 3.5 mPas.
all copied from here;
https://www.acea.be/uploads/news_documents/ACEA_European_oil_sequences_2016.pdf