Royal Purple

OneSlowV

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Jun 23, 2013
Messages
1,775
Location
Tyler,TX
Let me know how you like the engine oil. Always wondered if its worth switching to over Mobil 1
 

BadHabit2Break

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Joined
Jul 24, 2012
Messages
259
Location
Houston, TX
I run the 5w-20 since I bought my GT new with no issues, but am switching to Amsoil 10w-30 next oil change.

I have the gear oil also when my gears were done....no complaints.
 

y5e06

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Joined
Mar 17, 2013
Messages
8
Location
Austin, TX
I've tried redline mtl and RP synchromax. the synchromax viscosity is much closer to the motorcraft QDC than the redline is. it works well in these transmissions. I'd recommend trying it, especially if you flush it yourself.
 

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