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Signature 15w40 changes?

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I got my order, and the label has changed. Did they change up the formulation? It will be interesting to ...

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Old 04-13-2017, 09:23 PM
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Signature 15w40 changes?

I got my order, and the label has changed. Did they change up the formulation?

It will be interesting to see what Amsoil comes out with for the new FA-4 spec.

We just started receiving all the new CK-4 oils for the engines we sell. Now we are getting the new specs for the '18 engines, and the EPA mandate for the low-vis FA-4. For the first time, the new oils are NOT bacwards compatible, and we cannot mix the 2 oils, or use FA-4 in the "older" engines, and vice versa.

What have you heard, Nick?

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Old 04-14-2017, 02:42 AM
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It is my understanding they improved the formula.

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