Oil Sample Report on Motorcraft Full Synthetic Oil

[CajunMick]

Received oil sample report after switch to MC synthetic oil with 3,2xx miles. Disappointed. Viscosity’s still low and shearing. WTH?

Previously used MC blend oil, and samples also revealed low viscosity and shearing. All oil changes done at same local Ford dealer Quick Change outfit. Now I will have to question this place, again, what bulk oil does this station use? If they would, to keep my biz with them, I would like bear witness to their bulk oil tanks, marked. Prove it to me what you pumping into my vehicles!

Or bring my own oil of choice, see if they will change to that oil, no questions asks. I am leaning toward using Quaker State full synthetic oil, which is a Shell oil owned company. Shell also has the Pennzoil full synthetic stuff, that some brag about.

What about switch to a 5W or 10W40 lube oil, more viscous fluid?

My question now is that Ford WSS-M2C961-A1, which “specifically relates to ‘5W30‘ oil”, be it blend or full synthetic is good stuff. Would any 5W40 oil have this Ford 961-A1 notation, or be suitable for use on these 2.0 EB engines? My thoughts is this 961-A1 be a Ford compliance of and to EPA BS to meet the MPG requirement? There are some exclaiming any 5W or 10W40 motor oil not so being “tagged” this 961-A1, would not harm any engine. I tend to agree….at least it’s not peanut oil. Hence a cravat you’re dealing with warranty issue, blah blah blah.

Now if truck out of warranty, I have no issue putting whatever lube oil I favor. But not peanut oil.

Any comment, anyone?

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[Master Blaster]

Motorcraft dyno oil is made my Conoco-Philips in the U.S. and PetroCanada in Canada. The synthetic is made by Valvoline. All are makers of very high-quality oils. The big change in the Ford 961 spec is the reduction in aromatic compounds that can cause oil vapours to deposit on the backside of the intake valves in GDI engines. So no matter what, you need oil that meets that spec., but its not really relevant to your oil shearing issue. To make a higher viscosity at operating temperature oil, like moving from 5W30 to 5W40, typically adds more ethylene plastic polymers into the oil to provide more long-chain molecules. That's what GM just did with their mis-machined V8s to "fix" their junk. In absolute numbers, that viscosity change will reduce the shearing percentage if that's your real problem, but I suspect that something else is going on here. Since oil shearing is not generally seen in street vehicles and mostly seen in long-distance racing, and unless you're living at the redline then its unlikely to be the issue. What is the fuel dilution percentage? Maybe you're doing a lot of short trips, a lot of low-speed lugging, have a misfire, or have a cracked ring or something else that is polluting the oil with fuel.

 

[CajunMick]

Motorcraft dyno oil is made my Conoco-Philips in the U.S. and PetroCanada in Canada. The synthetic is made by Valvoline. All are makers of very high-quality oils. The big change in the Ford 961 spec is the reduction in aromatic compounds that can cause oil vapours to deposit on the backside of the intake valves in GDI engines. So no matter what, you need oil that meets that spec., but it’s not really relevant to your oil shearing issue. To make a higher viscosity at operating temperature oil, like moving from 5W30 to 5W40, typically adds more ethylene plastic polymers into the oil to provide more long-chain molecules. That's what GM just did with their mis-machined V8s to "fix" their junk. In absolute numbers, that viscosity change will reduce the shearing percentage if that's your real problem, but I suspect that something else is going on here. Since oil shearing is not generally seen in street vehicles and mostly seen in long-distance racing, and unless you're living at the redline then it’s unlikely to be the issue. What is the fuel dilution percentage? Maybe you're doing a lot of short trips, a lot of low-speed lugging, have a misfire, or have a cracked ring or something else that is polluting the oil with fuel, that causing shearing.

The sample report is attached in my post. There can see dilution results. I do many short trips locally, yes. But again sampling do not reveal fuel dilution. All the samplings reveal shearing. My engine now has approx 7400 miles. And it may be still a “tight” engine? And could be cause of shearing. I do not drive it hard, heavy on the pedal.

I will do more research on what causes shearing, if any experts dove into this issue. At this time, at least a rod bearing inserts is not turned yet, destroying the crank. The other issue is the turbo bearing….

 

[710-oil-614]

Very minimal shearing and they said oil is fine to continue to use for at least another 2k!

 

[CajunMick]

I read that. I was really overly concerned of the other reports on the blend stuff. Thinking the full synthetic variety might be better, best choice, and still seeing low viscosity number.

In a perfect world, in fluid dynamics, the oil is the separator, the bearing, protection of surfaces. And probably has AW or antiwear additives to protect surfaces. As I see it low viscosity could tend to wash out from bearing not preventing metal to metal contact. And prob induce shearing?

 

[Darryl]

The engine will last a few hundred thousand miles. I think the oil analysis is inducing unnecessary worries. Just my opinion. If the oil your dealership is using is inferior, they'd have a higher than normal number of cars with early engine failure or have higher than normal warranty claims. Just my opinion. But you can request that they use bottled oil if you don't trust what they're using. They might charge a bit more but you'll be 100% sure if what you're getting for your own peace of mind. But personally, I wouldn't worry about it.

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