Boosted only Oil Weight Poll

[MyFirst5.0]

interesting to see damn near everyone runs a different oil weight

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[Demon Coyote]

Running Amsoil 5w-20 Full Synthetic SS.

 

[Roh92cp]

Oil spec for the track orientated Boss 302 and GT350 is 5W-50.

So if you are on a road course 50 is probably better for you, if you live life quarter mile at a time then the 20 is probably perfect.

There is another thread on the forum describing that the 20 is spec'd for best fuel economy under normal driving conditions.

The 5.2L flat plan crank motor is a high reving motor and is spec'd for higher viscosity becuase of it. The 5.0 liter coyote is spec for 5-20 note for fuel econonmy, but becuase that is what lubricants the motor best under all condition.

Read this form the oil tech article I linked above.

• Thicker oils DO NOT automatically provide better wear protection than thinner oils, as some people mistakenly believe. Extensive “dynamic wear testing under load” of over 170 motor oils, has shown that the base oil and its additive package “as a whole”, with the primary emphasis on the additive package, which is what contains the extreme pressure anti-wear components, is what determines an oil’s wear protection capability, NOT its viscosity. In fact, the test data has shown that 5W20 oils can provide INCREDIBLE wear protection with over 120,000 psi load carrying capability/film strength/shear resistance, while 15W50 oils can sometimes only provide UNDESIRABLE wear protection with less than 60,000 psi. So, DO NOT use thicker oil under the assumption that it can provide better wear protection for our engines, because that is simply NOT TRUE.

THE BENEFITS OF USING THINNER OIL:

• Thinner oil flows quicker at cold start-up to begin lubricating critical engine components much more quickly than thicker oil can. Most engine wear takes place during cold start-up before oil flow can reach all the components. So, quicker flowing thinner oil will help reduce start-up engine wear, which is actually reducing wear overall.

• The more free flowing thinner oil at cold start-up, is also much less likely to cause the oil filter bypass to open up, compared to thicker oil. Of course if the bypass opened up, that would allow unfiltered oil to be pumped through the engine. The colder the ambient temperature, and the more rpm used when the engine is cold, the more important this becomes.

• Thinner oil also flows more at normal operating temperatures. And oil FLOW is lubrication, but oil pressure is NOT lubrication. Oil pressure is only a measurement of resistance to flow. Running thicker oil just to up the oil pressure is the wrong thing to do, because that only reduces oil flow/lubrication. Oil pressure in and of itself, is NOT what we are after.

• The more free flowing thinner oil will also drain back to the oil pan quicker than thicker oil. So, thinner oil can help maintain a higher oil level in the oil pan during operation, which keeps the oil pump pickup from possibly sucking air during braking and cornering.

 

[MyFirst5.0]

these oil threads make my head hurt, im just going to use a better 5w20 than the ford motorcraft. a lot of guys seems to like amsoil and pennzoil platinum

 

[Roh92cp]

these oil threads make my head hurt, im just going to use a better 5w20 than the ford motorcraft. a lot of guys seems to like amsoil and pennzoil platinum

I know that reading opinions on oils can be confusing and at times misleading becuase it's many times based on product marketing and not facts or independent testing data. That's why if you do anything, read the link above and let that be your guide. It's real test data produced in a lab with engineering grade equiptment by an independent that is not officiated with selling oil.

 

[zaquhree]

Pennzoil ultra platinum 5w30 or 10w30 works well for me!!

 

[Plimmer]

For all who are wanting to know what the best oil is for you motor you need to read this. This is the most extensive oil study and testing I've ever seen. Over 180 oils tested to the point of failure for shear protection and durability. The Most important factor in an engines oil is to protect metal parts from contact via the oil wedge effect. The oils ability to resist shear is the number one concern. This test gives every oil a shear rating at a PSI level with oil at realistic engine temps. The top brands and most expensive oil don't always produce the best protection as you will find out. It's a long read but well worth the effort if you love your motor. Oh yeah...and thin oils like 0-20 and 5-20 according to this study produce top rated shear resistance as well as faster flow through the engines parts which in effect creates better cooling and in the end better protection.

Edit: Make sure you read section 2 on oil viscosity (very important)

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

Thanks for posting this, tons of great data on this page. Certainly make me reconsider the oil I use.

 

[cdq85]

is there a particular oil filter everyone is using? haven't really seen anything on those.

 

[daltron]

AMSOIL SS 5w-50 almost year round and AMSOIL SS 0w-40 in the winter. AMSOIL EaO filter 365 days a year. Car is not a DD and revs to 7,800.

 

[RockStang]

Keep in mind also that the factory recommendation is based on the factory RPM limit. I remember reading about oil shearing or something like that so I run a full synthetic 30w in the warmer months and also because I'm revving the car to almost 8000rpm. I think almost all synthetic oils now are shear stable(maybe). It's my preference, doesn't mean I'm right or wrong.

 

[Roh92cp]

Keep in mind also that the factory recommendation is based on the factory RPM limit. I remember reading about oil shearing or something like that so I run a full synthetic 30w in the warmer months and also because I'm revving the car to almost 8000rpm. I think almost all synthetic oils now are shear stable(maybe). It's my preference, doesn't mean I'm right or wrong.

I think you could say all oil are shear stable to some extent. However an oil ability to resist shear under extreme conditions such as heat and extreme load as in forced induction and high RPM will test their limits for sure, and will prove not all oil are created equal. The limits of an oils shear protection may not result in bearing failure, but rather a collapse in the oil wedge and metal to metal contact resulting in some bearing wear.

 

[ALLKHEINZ]

im probably the only one that does this but i run a jug of 5/20 full synthetic and top it off with 5/30...i also dont run a specific brand of oil, i buy whicherver synthetic is on sale at the time i need it....my car sees the track near every saturday for 4-5 passes, currently has 5900 miles on it and not a hint of an issue...so far 9.40 at 146 with a 1.33 60', jt trim no lower and just a 3.48" on stock halfshafts.

 

[Terminator2]

The first number is the flow like weight in the cold start .. 0 flows the best vs 20.. The second number is the actually viscosity.. 50 seems a little heavy to me .. GT 500 run the 50 they also have no cam phasers the coyote motor has them so thinner oil is best. The factory specs are 5W 20


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Boss 302s run 5W-50 from the factory.

 

[F1scamp]

Doing research on the great oil debate again. Came across this oil. Seems the FR oil was made specifically with the ford modular motor in mind... anybody heard anything about it?

http://www.drivenracingoil.com/dro/products/street-performance-engine-oilshtml

 

[Jay159866]

5W30 Amsoil.. I could hear the difference after switching from Mobil 1 5W20.

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