What's the highest mileage AFM motor you've seen or own?

TahoeFL2017 · Oct 29, 2024

Wondering how far a AFM motor can go, I'm about to turn 100k on my 2017 5.3 6L80 with disabled AFM since around 50k miles.

Anyone own or hear of really high miles on an AFM motor?

Anyone hitting 200k, 300k, etc with AFM disabled?

k_arnold72 · Oct 29, 2024

There was an extensive thread on that already...

Most miles with stock AFM system?

I read a lot about deactivating the stock AFM system because of the many reports of trouble. But I often wonder who has accumulated the most trouble-free miles while running the OEM system. I have 114,000 on my '16 Tahoe, and no trouble yet (fingers still crossed).

www.tahoeyukonforum.com

Trey Hardy · Oct 29, 2024

TahoeFL2017 said:
Wondering how far a AFM motor can go, I'm about to turn 100k on my 2017 5.3 6L80 with disabled AFM since around 50k miles.

Anyone own or hear of really high miles on an AFM motor?

Anyone hitting 200k, 300k, etc with AFM disabled?

My dod engine in my 07 Tahoe has over 400,000 miles it’s got the 4l60 original powertrain original dod lifters never torn inside the motor for anything had two lifters stick on me possibly due to a oil pressure issue (pickup o ring cracked) got em free both times with marvel mystery oil she’s still a going today

ReaperHWK · Oct 29, 2024

160k on my 2015. Stock motor with AFM. I run a catch can though and only use synthetic every 5k.

Sparksalot · Oct 29, 2024

I have 210K on thecopcar. I added a Range device at about 180K. The engine has over 9800 hours.

88m53453 · Nov 4, 2024

TahoeFL2017 said:
Wondering how far a AFM motor can go, I'm about to turn 100k on my 2017 5.3 6L80 with disabled AFM since around 50k miles.

Anyone own or hear of really high miles on an AFM motor?

Anyone hitting 200k, 300k, etc with AFM disabled?

I’ve got a little over 281k miles on my 2015 with original engine and no mods. Runs like it should. 0w20 Pennzoil ultra these days with a premium filter

2015TahoePPV · Nov 4, 2024

Mine went 193K/ 13000 hours before #6 intake lifter collapsed.

Lil Timmy Shy · Nov 4, 2024

I have an acquaintance with 211K on his 2011 Avalanche with no issues with his AFM, nor his 6L80. I have another acquaintance with 188K on his Tahoe. He just had his tranny rebuilt and has no idea what "AFM" even means. My luck will probably differ from these two guys - for the worse! However, I pray not. I installed an AFM disabler at 31k. But I only have 33K so far (2014 SSV).

fondupot · Nov 4, 2024

One of my superintendents is driving a 2016 5.3 with over 280,000 miles on it. Engine is solid….trans was rebuilt once tho.

B-train · Nov 4, 2024

Currently at about 162k on a 2017 6.2L. Had #4 pushrod get bent, but replaced the rod and it's still running on the OE lifters. Time will tell....

What's the highest mileage AFM motor you've seen or own?

TahoeFL2017

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k_arnold72

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Most miles with stock AFM system?

Trey Hardy

8” fabtech icon coilovers uniballs 24x14on35/15.50

ReaperHWK

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Sparksalot

88m53453

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2015TahoePPV

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Lil Timmy Shy

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fondupot

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B-train

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