Rotella T6 5w40 or T5 10w30 for a 1995 E300D ? - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 10-14-2012, 06:10 AM Thread Starter
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Rotella T6 5w40 or T5 10w30 for a 1995 E300D ?

My glow plugs need to be replaced, I won't be able to do this immediately. Which oil, T6 5w40 or T5 10w30, will give better cold weather starting ability ?
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post #2 of 4 (permalink) Old 10-14-2012, 06:33 AM
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I suspect the 5W40 will. Don't forget the "W" follows the winter viscosity.

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post #3 of 4 (permalink) Old 10-14-2012, 06:42 AM
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post #4 of 4 (permalink) Old 10-14-2012, 09:47 AM
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For your engine you could also use Mobil1 0-40, but I run several oil tests on my Ford diesel, that I drove way more than MB and Mobil1 come with high iron while the factory representative was ignoring the questions about it.
I settled on using T6 for extra protection, although dino Rotella did not come much lower on test than the synthetics.
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