2010 Flex limited EB oil

[mcrmb1]

Well my 2010 limited EB Calls for 5W20 but I changed to 2012 timing components Actuator, Camshaft Gear, Tensioner, Timing Chain, Chain Guide, new water pump and Turbo should i go to the 5W30 oil or stay with 5W20 ?

 

[bpd1151]

IIRC the primary reason FMC switched to 5w30 was simply for fuel efficiency ratings.

I can tell you that my 2010, which now at it's core, lives a 2014 production block heavily modified by Livernois Motorsports, still runs the 5w20 with no issues whatsoever.

I'm sure based on my own experiences, you'll be fine running either weight.

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[SHOdded]

5w20, quality full synthetic.  Motorcraft oil filter preferred.  Others might work, or cause startup rattle, so I stick with MC.