Engine oil IDEMITSU or Motorcraft
Full synthetic Motorcraft for my Shelby, Roush, SHO, and Focus 1.0 ecoboost.
Ford performance oil filter for the Shelby. Motorcraft for the others.
Why? I had a Ford tech tell me any and all problems they'd ever seen with a Shelby engine involved one that used non-Motorcraft brand in engine or filter.
I run 10w30 motorcraft because my 300 doesn't dry start as bad with it
Idemitsu is responsible for the oil that powered the Mazda 787b; they know the rotary like no other. I exclusively use their synthetic 20w50 and premix.
Regarding brands, if you want to stick with factory oil without dealer price, Idemitsu is the brand to get. I emailed Mazda corporate and they said Idemitsu is the OEM for their oil.
Só compro óleo original na concessionária e da Motorcraft conforme manual.
switch to 5w20 as according to fords bulletin for oil, i been using motorcraft synthetic blend for 26 yrs
I have a Sohn kit and run Idemitsu engine oil in the engine and Idemitsu premix in the Sohn. Runs lovely and smooth and the original cat is still doing the job.
'17 f150 5.0l with 150k running 5w-20 motorcraft. Not a single problem and this was used to haul a 12' steel enclosed trailer loaded from day 1 and the wind blows a LOT here. Doesnt use a drop of oil.
We use Idemitsu for engine oil and transmission and red line for front and rear diff. Red line makes a good fluid for the transmission also.
I run motorcraft in my mustang and have zero complaints.
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