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I'm more specifically trying to better understand the differences. Redline is generally considered a high quality product, and on this forum Liqui Moly seems to be considered a low quality product. In this case, they are coming from different categories of base stock, but have similar specs and...

In this case, I'm looking for differential oil. I figured it would be a simpler comparison to try to understand some differences between the options.

My usual source for parts stocks two "synthetic" oils that meet the MB 235.8 spec. So, I was considering these two different 75W-90 differential gear oils. My brother and I got to discussing the practical implications of different oil compositions that meet the same specs. So, I'm just using...

I meant to update this, but only recently came back across it. The reply I received regarding the difference between the Zerex yellow and red stated "There may be some slight differences in the proprietary additive packages. However, they are effectively and functionally equivalent. They can be...

I had been looking at the yellow for specs. The documentation for the Nitrite Free Red, and Yellow, look the same (I couldn't see a difference). The SDS, however, shows a different formulation (Both have DIPOTASSIUM PHOSPHATE, but only the yellow has DECANEDIOIC ACID, DISODIUM SALT). I just...

On our farm, we don't change coolant as often as we should - so I figured we flush some systems and start using an ELC product. I had decided on Final Charge Global, but came across Zerex Heavy Duty Nitrite Free Extended Life. The Zerex HD-NF is less expensive, and expected to last 10 years...