Can I switch from M1 high mileage back to normal synthetic oil?

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1,885
Location
Caldwell Idaho
To be on the safe side and avoid a possible catastrophic failure, you should do an intermediary OC with Quantum Blue and the special transitional purge additive pack to make sure the engines chemistry reset is complete before fully switching over.
Any special procedure on which hand we should be using to pour in the oil?;););)
 
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Messages
1,885
Location
Caldwell Idaho
In my 2015 F150 with the 2.7 engineI have run 2 oil changes with M1 5w-30 high mileoil and 1 oil change with Valvoline Full Syn with Maxlife tech and 2 oil changes with rotella truck and suv and 1 with QSUD and one with PP and 1 oil change with Motorcraft from the dealer When the sealant on theoil pan leakes which was a common problem.
 
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1,967
Location
USA
Any special procedure on which hand we should be using to pour in the oil?

I saw on a PF video where it was tested and verified to deliver the best results when the vehicle is oriented on a true magnetic N-S azimuth to the poles to align the fields of the ferrous particles with the nose pointing north during the process. If the polarity is reversed, all particles will cling inside the engine and release on the next run cycle resulting in destruction.

That poor test mower. It never had a chance.
 
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15,672
Location
N.H, U.S.A.
Yes you can.

Step 1: Drain the used oil.
2: Replace oil filter
3: Install new oil.

Will it leak? IDK.

Why change? - cold weather?
Don't even think about "cleaning" . Nothing to think about.
No need for F.I cleaner - they should be avoided.
Seafoam? = Absolute garbage. Like LUCAS Oil Conditioner
 
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