Catch can results

chadman · July 4, 2020

I installed mine on my 2020 Sierra 5.3 at about 1,500 miles. At 5,500 miles I decided to check it. So after 4,000 miles this is what I found; about half full which seemed to be 2 to 3 ounces.

That’s a fair amount of oil and it’s even more important to catch it on DI engines.

19TrailBoss · July 4, 2020

Which catch can are you using?

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Grumpy Bear · July 4, 2020

So less than a half a cup in a 4,000 miles.

chadman · July 4, 2020

10 hours ago, chadman said:

I installed mine on my 2020 Sierra 5.3 at about 1,500 miles. At 5,500 miles I decided to check it. So after 4,000 miles this is what I found; about half full which seemed to be 2 to 3 ounces.

That’s a fair amount of oil and it’s even more important to catch it on DI engines.

JLT

DemonWorks · July 11, 2020

It's always nice to see results ! I just emptied mine as well and had quite a bit.

mike5511 · July 12, 2020

A catch can is considered a modification of the emissions system. Automatic voiding of your warranty the dealer tells me. Just a fyi.

lt1z · July 12, 2020

I installed mine on my 2020 Sierra 5.3 at about 1,500 miles. At 5,500 miles I decided to check it. So after 4,000 miles this is what I found; about half full which seemed to be 2 to 3 ounces.

That’s a fair amount of oil and it’s even more important to catch it on DI engines.

Ive seen the same at 4000 miles

AdamAT4 · July 12, 2020

A catch can is considered a modification of the emissions system. Automatic voiding of your warranty the dealer tells me. Just a fyi.

Thats crazy if true, a catch can is increasing reliability and over time reduce emissions as the valves will stay cleaner and seal better. Running premium gas won't even help a DI only engine, do these trucks use port as well as DI?

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lt1z · July 12, 2020

Thats crazy if true, a catch can is increasing reliability and over time reduce emissions as the valves will stay cleaner and seal better. Running premium gas won't even help a DI only engine, do these trucks use port as well as DI?

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DI only. You arent allowed to alter emissions components

MoonDogg · July 13, 2020

It's easy to put the factory hose back and take the catch can out, there is no way they can prove you had one.

lt1z · July 13, 2020

It's easy to put the factory hose back and take the catch can out, there is no way they can prove you had one.

Of course as long as you remember to do it

Doolin-Dalton · July 13, 2020

Incredible, do you have a post already - step by step instructions and photos how to install this? Links to where you got yours? Sincere thanks if you can do this.

Grumpy Bear · July 13, 2020

On 7/4/2020 at 7:45 AM, chadman said:

JLT

On their site is a simple instruction paraphrased below.

Pull the hose between the PCV and the manifold. If there is no oil in it you don't need a can. If there is, you need one.

You don't need to ask a forum. You need to look for yourself.

chadman · July 13, 2020

14 hours ago, Doolin-Dalton said:

Incredible, do you have a post already - step by step instructions and photos how to install this? Links to where you got yours? Sincere thanks if you can do this.

Purchase Here:

https://www.jlttruecoldair.com/jlt-3-0-oil-separator-2019-chevy-silverado-1500-gmc-sierra-1500-5-3l-6-2l-v8/

Go to the bottom and click on videos. Super easy.

Doolin-Dalton · July 13, 2020

This is awesome and you're right a must for DFI engines. My previous truck was the 2016 2500HD with the 6.0L V8 but I think that engine was the last of the SFI. DFI is nice, but it comes with a hiccup in gunk, these catch cans help eliminate that.