What weight oil do you use?

[Robottrainer]

I wouldn't. The oils have a balance of additives, all with their own purpose. I know this is hard to envision, but the additives actually compete for surface area in the engine and are also up against solubility limits of the base oil. As such, the concentration of additives are carefully balanced by companies that engineer the formulation. Not to mention, there are all sorts of different flavors of ZDDP so who knows what happens microscopically when you start mix-matching them. One thing is for sure, all the certifications listed on the bottle go out the window when you start mucking around with the formulation.

Absolutely. I had a discussion with amsoil about this and mixing viscosity. it doesn't work like you think. the analogy he used is like mixing different sized stones. you don't end up with average size stones. Just a bunch of mixed size stones.

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[Robottrainer]

Absolutely. I had a discussion with amsoil about this and mixing viscosity. it doesn't work like you think. the analogy he used is like mixing different sized stones. you don't end up with average size stones. Just a bunch of mixed size stones.

If you want Zddp in your oil, buy oil that has it. Amsoil has a hotrod oil with lots of zddp.

 

[Bit_the_Bullitt]

Send a sample off for analysis and you will change your mind. 5w20 looks fine at first, but the viscosity break down gets ugly. Especially if you're using Motorcrap oil.

This was my experience on my last oil change analysis from March, I will be going likely to 5w30 for next change (viscosity is the concern):

 

[SnowFox]

Wanna hear a funny and 100% true story about oil filling?

In my senior your of HS, I had a buddy whose slightly older sister decided she was going to change the oil in her/her family's early/mid 70's Pontiac Lemans (307/350 V8 engine? Can't remember).
Well, she actually bought the correct oil filter, jacked the car up, and seemed to get it done.
BUT, she didn't bother to check what the motor's designed oil capacity was (I'm guessing probably 5 quarts with the filter, maybe 6 tops).
So, you might have guessed it: she used a FULL case+ of oil that the father had bought shortly before this event, and she FILLED THE MOTOR "FULL"/TO THE TOP OF THE VALVE COVER!
When she tried to start the car, she got maybe 1/2 a crank and it wouldn't turn over anymore...
It was completely oil locked.
The dad was pissed.
Oil was everywhere!

LoL....

Oh...f**k that's tragic but that's absolutely hilarious.

 

[Robottrainer]

Oh...f**k that's tragic but that's absolutely hilarious.

My dad was a mechanic and a reader of popular science. he read the article about home oil disposal. dig a pit. fill it with aggregate. hammer a pipe into the center. pour the old oil down the pipe. I'll bet if we drilled there we would be like Jed Clampett

 

[chohan]

https://www.enginebuildermag.com/2012/03/zddp-when-where-what-why-how/

This was very informative, so thanks.

I'm confused over one aspect though,

ZDDP is Zinc Dialkyl Dithio Phosphates. The author begins talking about ZDDP and then evolves to phosphorous. So is he using phosphorous and ZDDP interchangeably?

"
In 1992, an API-rated SH oil contained 1,200 parts per million (ppm) of phosphorus; in 1996 SJ contained 1,000 ppm. It was not until 2001, when the rating went to SL, that we all started to see camshaft problems appear.

In 2001, SL-rated oil still contained 1,000 ppm of phosphorous, and it is the phosphorous that limits are set on. But this limits the amount of ZDDP an oil manufacturer can use. The rating was changed due to demands for increased engine cleanliness standards."

My question for those more knowledgeable than myself:
when speaking of ZDDP and a Virgin Oil Analysis, should I be looking at phosphorous levels or zinc. I had just assumed ZDDP would be the zinc levels but now feel it's not quite that simple?

Also, he mentions that "Because diesel engines tend to run considerably hotter around the piston rings, ZDDP tends to decompose and produces a lacquer on cylinder walls."

So I wonder could this be a problem with the modular 5.0?
Does my forced induction coyote run cooler around the rings than a diesel engine?

I'm teachable, help me learn.

 

[TonyT930]

Red line 5w 50 for track use and Red Line 5w40 for street use.

How do you like Redline? I was thinking about changing to it

 

[Robottrainer]

Re

How do you like Redline? I was thinking about changing to it

Redline is good

 

[1 old racer]

I am a mobil 1 long time customer and use that in all my other cars. However I don't track those veh. I do track my Mustang from time to time and I want to make sure I give my Mustang as much protection as I can. I know a lot of fellow track whores and most of them use Red Line or AMSOIL. and these guys have many seasons on their engines . So to me its worth a few extra coins for that assurance.

 

[dirtwarrior]

This was very informative, so thanks.

I'm confused over one aspect though,

ZDDP is Zinc Dialkyl Dithio Phosphates. The author begins talking about ZDDP and then evolves to phosphorous. So is he using phosphorous and ZDDP interchangeably?

"
In 1992, an API-rated SH oil contained 1,200 parts per million (ppm) of phosphorus; in 1996 SJ contained 1,000 ppm. It was not until 2001, when the rating went to SL, that we all started to see camshaft problems appear.

In 2001, SL-rated oil still contained 1,000 ppm of phosphorous, and it is the phosphorous that limits are set on. But this limits the amount of ZDDP an oil manufacturer can use. The rating was changed due to demands for increased engine cleanliness standards."

My question for those more knowledgeable than myself:
when speaking of ZDDP and a Virgin Oil Analysis, should I be looking at phosphorous levels or zinc. I had just assumed ZDDP would be the zinc levels but now feel it's not quite that simple?

Also, he mentions that "Because diesel engines tend to run considerably hotter around the piston rings, ZDDP tends to decompose and produces a lacquer on cylinder walls."

So I wonder could this be a problem with the modular 5.0?
Does my forced induction coyote run cooler around the rings than a diesel engine?

I'm teachable, help me learn.

all great questions I wish I had an answer
but my dad worked as a mechanic in a Ford dealership. Same garage for 30 years. I drove a Faoirmont wagon he gave me a little 4 oz of this stuff made by BG or BP I dsont remenber, I put it in my oil. This litttle container ,made this inline 6 250CI have more power and better MPG. Enough power it could be felt easy by my calibrates butt dyno. Zinc was 1 of the ingredence

 

[Robottrainer]

all great questions I wish I had an answer
but my dad worked as a mechanic in a Ford dealership. Same garage for 30 years. I drove a Faoirmont wagon he gave me a little 4 oz of this stuff made by BG or BP I dsont remenber, I put it in my oil. This litttle container ,made this inline 6 250CI have more power and better MPG. Enough power it could be felt easy by my calibrates butt dyno. Zinc was 1 of the ingredence

The way I look at it, additives are a band aid solution. the major thing with oil is the additive package. base oil is just that. Just the synthetic or conventional stock. The manufacturers spend multiple millions of dollars developing the additive package with the guidelines of the API.

each company has a proprietary package. additives don't enhance the package. if you want oil for a north American engine that had ZDDP, then buy that oil. the additive won't really help.

Amsoil, for one, has a hotrod oil in 10w40 and 20w50. they may even have a 10w30.

I question the need for this in a modern engine. the cam and followers are roller. the valve springs aren't crazy heavy pressure. there is no eccentric to run the fuel pump except maybe the high pressure di pump for that runs off the cam, but again, I don't think there os a lot of pressure there. I think a problem is being created here to satisfy a solution.

 

[50BMG]

I wouldn't. The oils have a balance of additives, all with their own purpose. I know this is hard to envision, but the additives actually compete for surface area in the engine and are also up against solubility limits of the base oil. As such, the concentration of additives are carefully balanced by companies that engineer the formulation. Not to mention, there are all sorts of different flavors of ZDDP so who knows what happens microscopically when you start mix-matching them. One thing is for sure, all the certifications listed on the bottle go out the window when you start mucking around with the formulation.

Good points....

 

[robvas]

I like the cake mix analogy

Duncan Hines, Betty Crocker, Pillsbury all make boxed cake mixes. Different amounts of flour, sugar, other additives...but they are all pretty similar and all make a cake.

You better know what you're doing if you just start adding your own ingredients to those mixes. Could have different effects on different mixes etc.

 

[SheepDog]

The manual for my 2020 Bullitt says 10w20

No, it doesn't. 5W-20 maybe

 

[S550HPP]

I would not use 5W-20 in anything. 5W40/50 will do everything 5W20 except have too low viscosity haha.

What was Ford thinking ....

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