rustproofing - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Mcgiiver · 12-15-2021, 05:48 PM

It is worth spraying the underbody and steel parts with rustproofing? I live in a road salt area. Does the BRZ have underbody panels that hide the bodywork?

jvincent · 12-15-2021, 06:17 PM

FWIW my FRS that I am trading in is 8 years old, winter driven the entire time.

There are a couple of spots where I am starting to see some rust form but you have to look closely to find them.

I will not be rustproofing my BRZ.

SpectreRT · 12-15-2021, 06:25 PM

They come with 5 year rust warranty and some sort of rust protection. I wouldnt do the crazy underspray stuff.

wizee · 12-15-2021, 07:43 PM

Quote:

Originally Posted by jvincent

FWIW my FRS that I am trading in is 8 years old, winter driven the entire time.

There are a couple of spots where I am starting to see some rust form but you have to look closely to find them.

I will not be rustproofing my BRZ.

How do your subframes, jack points, and lower control arms look? Most cars with similar stamped steel construction that are over 2-3 years old start looking rusty down there without rust proofing spray.

jvincent · 12-15-2021, 08:09 PM

The jack points are probably the worst. I didn't use pucks and they got a little bit folded so there's some rust there, but nothing terrible.

On the subframe and other under car pieces the worst is probably the nuts/bolts since they aren't painted. You can see some rust spots on the painted metal pieces but nothing out of the ordinary for a winter driven car in a heavy salt environment.

Also worth noting is that the first gen FRS did not have all the underbody panels that the current ones do from the factory and in addition to being winter driven I've been fortunate enough to have commuted through probably a half doesn't significant construction zones over the life of the car.

alphasaur · 12-15-2021, 08:10 PM

I spray under my cars with this when I do the fall oil change/winter wheel swap. Takes an extra 10 minutes and offers piece of mind. I've noticed less rust on subframe/bolts etc since I've been doing it.

https://www.amazon.com/Fluid-Film-11...613355&sr=8-24

Stonehorsw · 12-15-2021, 09:12 PM

Quote:

Originally Posted by alphasaur

I spray under my cars with this when I do the fall oil change/winter wheel swap. Takes an extra 10 minutes and offers piece of mind. I've noticed less rust on subframe/bolts etc since I've been doing it.

https://www.amazon.com/Fluid-Film-11...613355&sr=8-24

Probably I will do next year, focusing on worst parts. Concerned regarding rubber parts due to swelling.

What points normally do you protect?

Mcgiiver · 12-15-2021, 09:37 PM

CRC Heavy Duty Marine Corrosion Inhibitor

https://www.partsvu.com/77-06026-cor...SABEgLVXPD_BwE

It's great stuff not only for bodywork, but I spray all bolts, brake bleeders, flare joints, steel suspension parts, basically anything that might need disassembly on the future. It leaves a soft waxy film. It's like a foggy spray that can get into cavities. Four 10 ounce spray cans will do a BRZ or small pickup. It's very similar to a British rustproofing product called Waxoyl.

alphasaur · 12-16-2021, 12:05 AM

Quote:

Originally Posted by Stonehorsw

Probably I will do next year, focusing on worst parts. Concerned regarding rubber parts due to swelling.

What points normally do you protect?

I spray the control arms, bolts, and subframes/any steel.

Spuds · 12-16-2021, 01:04 AM

I did a bit of surface rust correction after 4 years or so. Steel wool brush, naval jelly, primer, black paint.

-Edges of the front subframe
-Pinch welds on the frame
-Little gusset thing in the rear wheel well

Most of the underbody has plastic or fiberglass covers.

tenderization · 12-16-2021, 02:59 AM

Would this apply to people living in the LA/SF Bay Area? I'm not sure what counts as "coastal" enough to be problematic for rust...

CedN · 12-16-2021, 03:36 AM

The 1st gen at least have pretty horrible rust proofing from the factory, it shocked me when i first had a look under my car. Im used to Renault though which are among the best in the market for rust protections, and my daily looked like new compared to the Gt86, even with twice the mileage. Used a spray on rust protection oil this winter which is my first with the 86 on all thee suspension, subframes etc to slow the process down.

soundman98 · 12-16-2021, 10:58 PM

Quote:

Originally Posted by tenderization

Would this apply to people living in the LA/SF Bay Area? I'm not sure what counts as "coastal" enough to be problematic for rust...

easy.

look at your neighbors cars.

if any 10+ year old vehicle normally looks like this, it's a problem.

https://www.facebook.com/marketplace...tory_type=post

if you can go into the local mechanic shop, and the oxy/acetylene torch has cobwebs on it, then it's just, well, LOL.

Strat_FRS · 12-18-2021, 03:17 PM

I spray LPS3 on underside before every winter and it keeps the cars nice and clean.

12-15-2021, 05:48 PM	#1
Mcgiiver Member Join Date: Apr 2021 Drives: 2022 BRZ Premium, 2009 Toyota Tacom Location: Princeton , NJ Posts: 41 Thanks: 2 Thanked 7 Times in 6 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	rustproofing It is worth spraying the underbody and steel parts with rustproofing? I live in a road salt area. Does the BRZ have underbody panels that hide the bodywork?

12-15-2021, 08:10 PM	#6
alphasaur friendly Join Date: Oct 2018 Drives: 17' 86 Location: Dutchess County, NY Posts: 734 Thanks: 1,483 Thanked 483 Times in 293 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	I spray under my cars with this when I do the fall oil change/winter wheel swap. Takes an extra 10 minutes and offers piece of mind. I've noticed less rust on subframe/bolts etc since I've been doing it. https://www.amazon.com/Fluid-Film-11...613355&sr=8-24 __________________ Seek comfort in discomfort.

12-15-2021, 09:37 PM	#8
Mcgiiver Member Join Date: Apr 2021 Drives: 2022 BRZ Premium, 2009 Toyota Tacom Location: Princeton , NJ Posts: 41 Thanks: 2 Thanked 7 Times in 6 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I use this CRC Heavy Duty Marine Corrosion Inhibitor https://www.partsvu.com/77-06026-cor...SABEgLVXPD_BwE It's great stuff not only for bodywork, but I spray all bolts, brake bleeders, flare joints, steel suspension parts, basically anything that might need disassembly on the future. It leaves a soft waxy film. It's like a foggy spray that can get into cavities. Four 10 ounce spray cans will do a BRZ or small pickup. It's very similar to a British rustproofing product called Waxoyl.

12-16-2021, 03:36 AM	#12
CedN Senior Member Join Date: Dec 2021 Drives: 2013 GT86 fully standard Location: Sweden Posts: 123 Thanks: 0 Thanked 76 Times in 50 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	The 1st gen at least have pretty horrible rust proofing from the factory, it shocked me when i first had a look under my car. Im used to Renault though which are among the best in the market for rust protections, and my daily looked like new compared to the Gt86, even with twice the mileage. Used a spray on rust protection oil this winter which is my first with the 86 on all thee suspension, subframes etc to slow the process down. __________________ 2013 GT86, fully standard daily and occasional track day car

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12-15-2021, 06:17 PM	#2
jvincent Senior Member Join Date: Sep 2013 Drives: 2022 WRB BRZ Sport-Tech Location: Ottawa, Canada Posts: 1,746 Thanks: 131 Thanked 1,411 Times in 715 Posts Mentioned: 25 Post(s) Tagged: 2 Thread(s)	FWIW my FRS that I am trading in is 8 years old, winter driven the entire time. There are a couple of spots where I am starting to see some rust form but you have to look closely to find them. I will not be rustproofing my BRZ.

12-15-2021, 06:25 PM	#3
SpectreRT Senior Member Join Date: Jul 2013 Drives: Subaru BRZ Location: usa Posts: 760 Thanks: 164 Thanked 319 Times in 210 Posts Mentioned: 17 Post(s) Tagged: 2 Thread(s)	They come with 5 year rust warranty and some sort of rust protection. I wouldnt do the crazy underspray stuff.

12-15-2021, 08:09 PM	#5
jvincent Senior Member Join Date: Sep 2013 Drives: 2022 WRB BRZ Sport-Tech Location: Ottawa, Canada Posts: 1,746 Thanks: 131 Thanked 1,411 Times in 715 Posts Mentioned: 25 Post(s) Tagged: 2 Thread(s)	The jack points are probably the worst. I didn't use pucks and they got a little bit folded so there's some rust there, but nothing terrible. On the subframe and other under car pieces the worst is probably the nuts/bolts since they aren't painted. You can see some rust spots on the painted metal pieces but nothing out of the ordinary for a winter driven car in a heavy salt environment. Also worth noting is that the first gen FRS did not have all the underbody panels that the current ones do from the factory and in addition to being winter driven I've been fortunate enough to have commuted through probably a half doesn't significant construction zones over the life of the car.

12-16-2021, 01:04 AM	#10
Spuds The Dictater Join Date: Apr 2017 Drives: '13 Red Scion FRS Location: MD, USA Posts: 9,646 Thanks: 26,684 Thanked 12,705 Times in 6,293 Posts Mentioned: 88 Post(s) Tagged: 0 Thread(s)	I did a bit of surface rust correction after 4 years or so. Steel wool brush, naval jelly, primer, black paint. -Edges of the front subframe -Pinch welds on the frame -Little gusset thing in the rear wheel well Most of the underbody has plastic or fiberglass covers.

12-16-2021, 02:59 AM	#11
tenderization Member Join Date: Sep 2021 Drives: 88 RX-7, 2022 BRZ Location: California Posts: 91 Thanks: 170 Thanked 31 Times in 17 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Would this apply to people living in the LA/SF Bay Area? I'm not sure what counts as "coastal" enough to be problematic for rust...

12-18-2021, 03:17 PM	#14
Strat_FRS Member Join Date: Oct 2021 Drives: 2015 FRS for daily and track use Location: Vancouver, Canada Posts: 82 Thanks: 14 Thanked 204 Times in 51 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	I spray LPS3 on underside before every winter and it keeps the cars nice and clean.

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