now, lets talk oil!

[Agcsr25]

Here is a very interesting and long read on motor oil. Testing was done on various brands and weights including Motorcraft 5w50. All oils were tested at 230 degrees F and some had additional testing at 275 degrees F. Motorcraft 5w50 was one of the oils tested at both 230 and 275 degrees F. High temperature and high shear is addressed in this article as well as additive packages. https://540ratblog.wordpress.com/2013/06/20/motor-oil-wear-test-ranking/

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[Hack]

Lots of self bragging and claims with little to no actual info. Very rambling as well. But I only read a few pages - maybe it gets better.

 

[Agcsr25]

Lots of self bragging and claims with little to no actual info. Very rambling as well. But I only read a few pages - maybe it gets better.

Skip down to methodology and you can avoid some of the self aggrandizing and get to the results.

 

[Spacebird]

https://540ratblog.wordpress.com/2013/06/20/motor-oil-wear-test-ranking/

From the article:

And the full synthetic 5W50 Motorcraft, API SN oil also ranks in the top 10% of all the oils I’ve tested, with a “Load carrying capacity/Film strength” value of 103,517 psi. With the extremely impressive wear protection capability provided by these oils, if any oils would interfere with ring seal and proper break-in wear overall, these oils would be the ones to do it. But, that is simply not a problem, and of course these vehicles all come with a normal factory warranty.

 

[mustang_guy]

Mc 5w50 in under 1500 miles sheers to a 40 weight. Before 5k its down to a 30w. It is crappy oil. It doesn't even hold its 50 like the better oils on the market.

 

[Trackaholic]

Mc 5w50 in under 1500 miles sheers to a 40 weight. Before 5k its down to a 30w. It is crappy oil. It doesn't even hold its 50 like the better oils on the market.

I've seen you mention this before. Do you have any charts showing the performance over time? I just did my second oil change (@ 7000 miles) and the pressured haven't changed between the new oil and the 4500 mile old oil with two track days. Because of the track days I was ready to get the oil out anyway, but would be interested to know how this oil degrades over time.

-T

 

[mustang_guy]

I've seen you mention this before. Do you have any charts showing the performance over time? I just did my second oil change (@ 7000 miles) and the pressured haven't changed between the new oil and the 4500 mile old oil with two track days. Because of the track days I was ready to get the oil out anyway, but would be interested to know how this oil degrades over time.

-T

Unleashed beast on svt performance does. I believe its in his 5.0/road runner uoa thread. Id pm him to discuss 5w50 in more detail if you have any specific questions. Hes seen way more uoas of it then i have.

 

[cosmo]

Unleashed beast on svt performance does. I believe its in his 5.0/road runner uoa thread. Id pm him to discuss 5w50 in more detail if you have any specific questions. Hes seen way more uoas of it then i have.

http://www.*******************/forums/showthread.php?787413-Official-UOA-thread-with-oil-poll

This?

EDIT: oh yeah, I forgot, we're forbidden to link to s v t performance. just google "unleashedbeast s v t performance oil" and you should be able to find it

 

[mustang_guy]

Lol thats why i didnt link it

 

[Hack]

Mc 5w50 in under 1500 miles sheers to a 40 weight. Before 5k its down to a 30w. It is crappy oil. It doesn't even hold its 50 like the better oils on the market.

What impact do you believe this change in effective weight has? How do you think a change to the hot weight will impact the life of the engine vs. the oil having a characteristic such as film strength?

Can you point to any real data to back up any thoughts you have on this? I'm talking about average engine life as data, just in case you weren't sure.

 

[Rainier42]

What impact do you believe this change in effective weight has? How do you think a change to the hot weight will impact the life of the engine vs. the oil having a characteristic such as film strength?

Can you point to any real data to back up any thoughts you have on this? I'm talking about average engine life as data, just in case you weren't sure.

I don't believe the change would impact engine life but since it sheers so quickly to a 40w/30w, why not start with a high quality 40w that won't sheer as quickly/easily.

Ferrari, Porsche, Aston Martin, McLaren, Mercedes, BMW, GM, Chrysler, VW, etc etc recommend 0w40 and none recommend 5w50 Motorcraft oil, which is made by Conoco-Philips. This whole topic has been discussed in detail on the Boss 302 sites and many have switched away from 5w50.

 

[mustang_guy]

What impact do you believe this change in effective weight has? How do you think a change to the hot weight will impact the life of the engine vs. the oil having a characteristic such as film strength?

Can you point to any real data to back up any thoughts you have on this? I'm talking about average engine life as data, just in case you weren't sure.

Your oil is your engines blood essentially. Why would you buy oil that knowingly sheers down to lower weight then you purchased? You bought it for the 5w50 properties. Why would you want it to not be that when you drain it? i mentioned where to learn about fords meh oils. Nothing from svt can be shown here anyway. In certain situations not having a 50w oil during certain activities causes accelerated wear. Thats all there is to take away from it. If you dont plan on keeping the car for 10+ years or dont care about the engine youll be passing on, run 5w50 mc. :shrug:

Its like cheaping out on your tires. Its the only contact between you and the road. It matters. When i worked at ford, i steered anyone i could away from MC oil.

 

[Spacebird]

You bought it for the 5w50 properties. Why would you want it to not be that when you drain it?

Not necessarily. Engines can typically operate happily at a range of high and low viscosity grades (and each grade has its own range). Engineers know that oil thins over the course of its service. When new it's on the thick side, when old it's on the thin side, but for most of an oil interval the viscosity is in the Goldilocks zone. A 40 weight could very well be the Voodoo's Goldilocks weight.

Truth is that until there are millions of miles on Voodoo engines, UOAs galore, and lots of Voodoos that have been torn down and inspected, it's all pure speculation.

Also, there is nothing wrong with Amsoil, but the Cult of Amsoil is very real.

 

[Davey]

But if I use the MC it will correct it self to the weight your suggesting. In the 40 range. By the way I change my oil annually or 3000 miles no matter what. Just a thought. I wan to use the best oil. I hear of people say there oil press is higher when they have the amsoil. That doesn't sound good. I'm on the fence with all this.

 

[Shift]

But if I use the MC it will correct it self to the weight your suggesting. In the 40 range. By the way I change my oil annually or 3000 miles no matter what. Just a thought. I wan to use the best oil. I hear of people say there oil press is higher when they have the amsoil. That doesn't sound good. I'm on the fence with all this.

That's what I was thinking. I will most likely never use the 5w50 oil to its full potential(tracking), and would like a lower viscosity since it's just a street car with the occasional mountain drives(thought definitely not like how smgts drives lol). Sounds like the MC would shear itself down to where it matches how I use it, and also keeping my warranty intact at the same time.

At the very least, I'll be the guinea pig, as I do plan on keeping this car for 10+ years. I'll let you guys know how the engine is in the year 2026 :cheers:

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