2016 Fiesta ST with upgraded turbo

[Matt_V]

Hey guys. I will soon be upgrading the turbo on my 2016 Ford Fiesta ST and have heard multiple sources say it would be a good idea to upgrade to a thicker viscosity oil.

Ford calls for 5W-20 in these cars, but many people seem to prefer 5W-30 or even 5W-40.

Right now I'm using Mobil1 5W-20 and so far so good. This is still a vehicle that will be driven every day, and the turbo is only a bit larger than stock so not massive.

 

[A_Harman]

If you're just doing street driving, the M1 5w20 will be just fine.

 

[FCD]

Mobil 1 5W-30 is what i would use.

 

[Bandito440]

Can you monitor oil temp?

 

[BrocLuno]

I'd step up to xW-30 too

 

[gathermewool]

How will you be tuning for the larger turbo?

What power level increase are you expecting?

 

[aquariuscsm]

What's the engine/turbo differences between the Focus ST and RS? I know the RS specs 5W50.

 

[Matt_V]

Originally Posted By: gathermewool
How will you be tuning for the larger turbo?

What power level increase are you expecting?

Going from roughly 220whp to 280ish whp.

 

[cnatra]

M1 0w-40 or Castrol Edge 0w-40

Look at HTHS numbers

 

[Matt_V]

Originally Posted By: gathermewool
How will you be tuning for the larger turbo?

Custom tune using the Cobb Accessport device. Going to be using a mix of 92 octane and ethanol for an E30 mix.

 

[FCD]

Do you have lead foot syndrome?
( you know what i mean )

 

[gathermewool]

Originally Posted By: Matt_V
Originally Posted By: gathermewool
How will you be tuning for the larger turbo?

Custom tune using the Cobb Accessport device. Going to be using a mix of 92 octane and ethanol for an E30 mix.


Who is tuning you? E-tune or dyno? I'd ask them what they think, but don't be surprised if they know jack and shh about oil .

with that power boost I'd be going a grade higher and as robust as possible .

 

[rrounds]

If you get 280hp thats a pretty good jump in power(over 27% more) thats putting extra stress on the main and rod bearings. I would jump up to a 0/40 or 5/40 oil. I doesn't matter what oil you use just putting around on the street, its when your having fun on a track that you want more protection. Even on the street it only takes a few seconds to destroy the bearings.

ROD

 

[KL31]

Some people will swear by the recommended spec but it's fairly common for upgraded power mods to also go a higher viscosity. It's turbo and DI and you're going to be running an ethanol mix.

M1 0w40 is a good choice if you get it cheap where you live. It's close to a thicker 30 grade.

 

[Matt_V]

Originally Posted By: FordCapriDriver
Do you have lead foot syndrome?
( you know what i mean )


Honestly my driving habits are moderate. I occasionally go full throttle but drive pretty tame on my daily commute.

Originally Posted By: gathermewool

Who is tuning you? E-tune or dyno? I'd ask them what they think, but don't be surprised if they know jack and shh about oil .

with that power boost I'd be going a grade higher and as robust as possible .

It is an E-tune.

 

[Matt_V]

Originally Posted By: KL31
Some people will swear by the recommended spec but it's fairly common for upgraded power mods to also go a higher viscosity. It's turbo and DI and you're going to be running an ethanol mix.

M1 0w40 is a good choice if you get it cheap where you live. It's close to a thicker 30 grade.

M1 0w-40 looks great but the high SAPS rating of 1.34 compared to the 0.85 of the 5W-20 has me concerned as these DI engines are known for carbon build up.

 

[FCD]

How about Redline 5W-20 or 5W-30, Redline oils are very robust full ester oils with huge HTHS numbers.