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Can Audi Genuine Engine Oils from Different Manufacturers Be Mixed?

4 Answers
Albuquerque
07/29/25 3:14pm
Audi genuine engine oils from different manufacturers cannot be mixed because the formulations vary by manufacturer. Composition of genuine engine oil: The main components are base oil and additives. Base oil is a non-volatile oil extracted from plant seeds, flowers, roots, or fruits, which can lubricate the skin and is directly used for skin massage. It is also the best base oil for diluting essential oils. Engine oil additives enhance the quality and durability of the oil, thereby protecting the engine. By using these additives, the performance of the engine oil is elevated to its highest level. Classification of engine oils: Engine oils are categorized into conventional mineral oil, semi-synthetic oil, and full-synthetic oil. Semi-synthetic oil is very close in purity to full-synthetic oil but is slightly more expensive than mineral oil, making it an ideal transitional product from mineral to synthetic oil.
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MarleyRose
08/13/25 7:57am
As someone who frequently handles Audi maintenance, I've seen cases where original oils from different manufacturers were mixed, but I don't recommend doing this. All Audi original oils meet VW specifications, such as 504 or 508 standards, but the additive compositions from different manufacturers may have minor differences. When mixed, these additives might interact, leading to sludge formation or reduced lubrication efficiency, increasing the risk of engine wear. In the long run, it's best to stick with the same brand and batch of oil to ensure formula consistency and protect engine health. Regularly changing the entire oil is key—don't risk it to save a little.
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KingstonAnn
10/11/25 7:13am
I've been driving an Audi and maintaining it for years. Once, I mixed original engine oils from different manufacturers, and the engine started making strange noises. After troubleshooting, it was found that the oil quality was uneven. The technician explained that even though both oils were Audi-certified, manufacturers might have unique base oil combinations, and mixing them could interfere with performance. Since then, I've stuck to a single brand to avoid recurring issues. Regularly checking the oil level during routine maintenance can prevent problems before they arise.
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LeKathryn
11/24/25 8:21am
Mixing different oils is not a good idea, as I'm concerned about potential ingredient conflicts between different manufacturers. Audi engines are precision-made, and mixing oils could alter viscosity or cause sedimentation, affecting cooling and cleaning. While it may seem fine in the short term, the accumulated wear could be significant. For safety, I insist on using single-source original oil to maintain worry-free vehicle condition.
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