L8T Engine oil catch can

73Blazer · May 22, 2026

If any of you guys are using an oil catch can, which one did you choose and why?

Phil-AT4 · May 23, 2026

I purchased the K&N air oil separator from Amazon

https://www.amazon.com/dp/B0CKWGNR2V?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2

I purchased this one because
a) cost (didn't want to invest a lot of $$ if it wasn't doing any good)
b) K&N reputation
c) simplicity of installation

So far, after 2K miles, it's caught about a couple of tablespoons of oil.

73Blazer · May 23, 2026

I agree on the price point, I've gotta buy 2.
So the 6oz capacity is more than enough to empty it at regular oil change intervals?
Also what is the K&N unit made of metal or plastic?

Tinman265 · May 23, 2026

I did the J&L. Had it on my Yukon and they offered a reconfigure service for new hoses to my new 26 2500 6.6. Seemed to work well. Brackets are sturdy.

Phil-AT4 · May 24, 2026

73Blazer said:
I agree on the price point, I've gotta buy 2.
So the 6oz capacity is more than enough to empty it at regular oil change intervals?
Also what is the K&N unit made of metal or plastic?

The unit is made of metal. Hoses have OEM fittings so they just snap right on to the fittings. As for the 6oz capacity, so far the amount caught in 2K miles suggests that it be large enough. I would think that if you catch more than 6oz between oil changes, then you have other issues.

73Blazer · May 24, 2026

Phil-AT4 said:
The unit is made of metal. Hoses have OEM fittings so they just snap right on to the fittings. As for the 6oz capacity, so far the amount caught in 2K miles suggests that it be large enough. I would think that if you catch more than 6oz between oil changes, then you have other issues.

Good point