Georgia Fiero Club Forum

All Things Fiero => Tech Tips, Tech Questions => Topic started by: NoMad on May 01, 2021, 11:48:25 am

Title: A New winner in oil filter performance
Post by: NoMad on May 01, 2021, 11:48:25 am
I just finished watching the latest episode of engine masters on motor trend. For once it was really useful infor for fieros and general mechanic stuff rather than just big cube v8 stuff.

They tested a whole slew of oil filters for flow numbers and construction on their dyno. As is no surprise, the WIX filters were two of the top three for performance. But the top was quite a surprise! The flow numbers for the WIX, WIX Race, and K&N gold were all pretty much the same, but the microns of filtration were very different. The WIX Race was a 61 micron filter for thicker oils, so if running straight weight 50 or more it would be a great choice. The WIX standard was flowing about the same but with a 20 micron filter for lighter oils (5W30, etc.). The K&N gold however was built with a heavier housing and had a 10 micron filter with no noticable depletion in flow rate. So ya, the WIX we all have been loving is a great filter, but the K&N gold filters smaller particles and does so without losing any noticable flow.

Food for thought on your next oil change.
Title: Re: A New winner in oil filter performance
Post by: GTRS Fiero on May 01, 2021, 11:50:20 am
Great info!

"Straight weight" oil?
Title: Re: A New winner in oil filter performance
Post by: NoMad on May 01, 2021, 01:38:49 pm
Straight weight is just a 40 weight, 50 weight, etc. Usually used for race engines or older motors with larger tolerances. Single viscosity basically.
Title: Re: A New winner in oil filter performance
Post by: Fierofool on May 01, 2021, 01:57:35 pm
Several years ago I saw a similar dissection and analysis and Wix and Purolator were the top.  K&N wasn't in that analysis.  Fram was a joke.  Wix also makes the higher-end NAPA filters, too. 
Title: Re: A New winner in oil filter performance
Post by: GTRS Fiero on May 01, 2021, 03:17:59 pm
Frahm is terrible, almost across the board.  Yes, there is another thread on here, as you describe.
Title: Re: A New winner in oil filter performance
Post by: GTRS Fiero on May 01, 2021, 03:21:55 pm
Quote from: NoMad on May 01, 2021, 01:38:49 pm
Straight weight is just a 40 weight, 50 weight, etc. Usually used for race engines or older motors with larger tolerances. Single viscosity basically.

So, when I buy 5W30, it is multiple viscosity.  I hadn't realized there is a term for the single-viscosity oils.  Good to know.  Thanks for the explanation.
Title: Re: A New winner in oil filter performance
Post by: NoMad on May 01, 2021, 09:57:06 pm
Glad to help. Now back to my regularly scheduled insanity.
Title: Re: A New winner in oil filter performance
Post by: GTRS Fiero on May 02, 2021, 10:23:56 am
Looks as if the WIX filter for the V6 Fiero is 51040

Quote
Oil Filter, Replacement, 21 Micron, 3.404 in. Tall, 2.921 in. OD, 18mm x 1.5 Thread, AMC, GM, Each
Title: Re: A New winner in oil filter performance
Post by: GTRS Fiero on May 02, 2021, 10:28:01 am
For K & N, there appear to be 2 V6 oil filters:

Not sure sbout the gas oil part.