Underseal that vulnerable back end!?
Underseal that vulnerable back end!?
Author
Discussion

Swervym

Original Poster:

30 posts

49 months

Wednesday 2nd November 2022
quotequote all
Lurking finally got me into trouble...
I have a new member of the family to look after now, piccys to follow as she is in the dealership being treated to a full once over, 2017 Vantage S V8. Oooh!
Please could you help with a few questions regarding the ACF-50 underside protection fluid that can be applied to protect that chassis at the back end.
At a £180 it seems like a reasonable thing to do, is it?
Are there better alternatives?
I am asking as she is fully wrapped already and I want to make sure she looks good all round for a nunnery of years to come.
Thoughts please

Jon39

14,872 posts

171 months

Wednesday 2nd November 2022
quotequote all

When I bought an aerosol of ACF 50, it cost about £15.
An extra £165 to squirt it, seems quite a good earner.

The only proper solution, is for the subframe to be removed, then there is a procedure involving I think, galvanizing or powder coating.

However, if you plan to use the car reasonably lightly, it will be very many years before any problems occur.
Even when it looks rusty, it only tends to be surface corrosion, not about to break apart.

Enjoy your new car. They are wonderful.

Longy00000

2,103 posts

68 months

Wednesday 2nd November 2022
quotequote all
Acf 50 us a brilliant protector against rust however its mot really a permanent solution. Lots of motorcyclists spray their bikes with it in readiness for winter but it's the sort of product that needs used annually. I wouldn't rely on it as a permanent fix.
Powder coating or similar is a more permanent solution

ian448

167 posts

126 months

Wednesday 2nd November 2022
quotequote all
Would not recommend the acf50 aerosol cans , it comes out a bit gloopy , I bought a litre bottle of acf50 a few years ago along with a fine mist spray bottle and give the rear subframe a good coating once a year , almost looks like new

paulrog1

1,222 posts

169 months

Wednesday 2nd November 2022
quotequote all
The only way of properly protecting the rear subframe is to remove, prime, and powdercoat.

Also as the frame is tubular the inside needs to be protected.

I removed mine a couple of years ago, I found loads of other little faults which you wouldn't notice whilst driving but all were repaired.

Read my PH topic on it.

VeeReihenmotor6

2,558 posts

203 months

Wednesday 2nd November 2022
quotequote all
Lanoguard is a more robust solution to ACF-50 but does need annual/bi-annual reapplication. It is also clear and a natural product that won't interfere wth rubbers etc

Swervym

Original Poster:

30 posts

49 months

Thursday 3rd November 2022
quotequote all
Jon39 said:

When I bought an aerosol of ACF 50, it cost about £15.
An extra £165 to squirt it, seems quite a good earner.

The only proper solution, is for the subframe to be removed, then there is a procedure involving I think, galvanizing or powder coating.

However, if you plan to use the car reasonably lightly, it will be very many years before any problems occur.
Even when it looks rusty, it only tends to be surface corrosion, not about to break apart.

Enjoy your new car. They are wonderful.

Swervym

Original Poster:

30 posts

49 months

Thursday 3rd November 2022
quotequote all
Jon39 said:

When I bought an aerosol of ACF 50, it cost about £15.
An extra £165 to squirt it, seems quite a good earner.

The only proper solution, is for the subframe to be removed, then there is a procedure involving I think, galvanizing or powder coating.

However, if you plan to use the car reasonably lightly, it will be very many years before any problems occur.
Even when it looks rusty, it only tends to be surface corrosion, not about to break apart.

Enjoy your new car. They are wonderful.
Thanks Jon39

Swervym

Original Poster:

30 posts

49 months

Thursday 3rd November 2022
quotequote all
Longy00000 said:
Acf 50 us a brilliant protector against rust however its mot really a permanent solution. Lots of motorcyclists spray their bikes with it in readiness for winter but it's the sort of product that needs used annually. I wouldn't rely on it as a permanent fix.
Powder coating or similar is a more permanent solution
Thanks Longy but now much world that cost?

Swervym

Original Poster:

30 posts

49 months

Thursday 3rd November 2022
quotequote all
paulrog1 said:
The only way of properly protecting the rear subframe is to remove, prime, and powdercoat.

Also as the frame is tubular the inside needs to be protected.

I removed mine a couple of years ago, I found loads of other little faults which you wouldn't notice whilst driving but all were repaired.

Read my PH topic on it.
Sorry Paulrog1 but I am new to this wonderful resource and don't know where to find your expert musings?

Swervym

Original Poster:

30 posts

49 months

Thursday 3rd November 2022
quotequote all
Swervym said:
Jon39 said:

When I bought an aerosol of ACF 50, it cost about £15.
An extra £165 to squirt it, seems quite a good earner.

The only proper solution, is for the subframe to be removed, then there is a procedure involving I think, galvanizing or powder coating.

However, if you plan to use the car reasonably lightly, it will be very many years before any problems occur.
Even when it looks rusty, it only tends to be surface corrosion, not about to break apart.

Enjoy your new car. They are wonderful.
Cheers Lanno where can I get such a thing please?

MJ911

135 posts

139 months

Thursday 3rd November 2022
quotequote all
another advocate for Lanoguard, its just as easy to apply as ACF-50 and lasts longer whilst giving a more robust protection. I use it on my jeep for winter driving and classic cars.

ChocolateFrog

34,954 posts

201 months

Thursday 3rd November 2022
quotequote all
Bilt Hamber Dynax UC if you want a semi-permanent solution.

Dynax S50 if you're doing the inside of the sub frame at the same time.

nickv12

1,507 posts

111 months

Thursday 3rd November 2022
quotequote all
I just had ACF 50 applied whilst mine was getting its larger 4-year service at supplying garage HWM. They did a thorough job, though, undertray and wheels off, etc. I can really recommend them.





You can see from these photos (before it was applied) that the steel parts lightly surfaces corrode under the tray. All VH examples which actually get used do that, and nothing to worry about. It's largely overengineered and of no concern at all. But anything to help me mentally use the car all year round is good in my book.

Yes, you can buy the stuff cheaper. Of course you can. But to do it properly you need a ramp and find a garage willing to do this messy job. I originally phoned around several places to where I am locally and all said "no", including those who claimed to do this stuff. I mentioned it in passing to HWM before taking it for the service, and they saved the day.

paulrog1

1,222 posts

169 months

Thursday 3rd November 2022
quotequote all
Swervym said:
Sorry Paulrog1 but I am new to this wonderful resource and don't know where to find your expert musings?
Enjoy -

https://www.pistonheads.com/gassing/topic.asp?h=0&...

belfry

1,040 posts

210 months

Thursday 3rd November 2022
quotequote all
I us act 50 in a spray gun connected to my air compressor. It gives really good coverage and the fine mist allows it to penetrate all areas. 10 minutes per car once a year.

vpr

3,923 posts

266 months

Sunday 6th November 2022
quotequote all
belfry said:
I us act 50 in a spray gun connected to my air compressor. It gives really good coverage and the fine mist allows it to penetrate all areas. 10 minutes per car once a year.
This is how I apply it.

Best way

Swervym

Original Poster:

30 posts

49 months

Sunday 6th November 2022
quotequote all
Thanks for all the replies!
What a great forum, hopefully I can be retuning the favour after a few years of ownership!
Probably going to get the dealer to do it before I pick her up for the first drive!!

Simpo Two

92,542 posts

293 months

Monday 10th August
quotequote all
Just starting this up again as my 2014 Vanquish currently has a very clean underside and I'm interested in protecting it as well as reasonably possible for as long as possible.

Some people say it should be treated, others say not. One suggested it might not be a good idea and they had removed under seal for a few people at great cost recently, another suggested clear wax because black underseal might devalue the car. But they don't specifically know about Astons. Is there an official Aston owner's view?

Assuming it's 'yes', like the OP I've been quoted £180 for ACF-50 - was it HWM by any chance? But both that and Lanogard only last a year which seems entirely pointless to me. Dinotrol and Bilt Hamber are mentioned - any reason not to use them?

stevenichols

143 posts

110 months

Monday 10th August
quotequote all
Hi,

I sprayed my rear subframe on my 2006 V8 Vantage a couple of years ago with Dinitrol. I top it up every year when I am doing work with the rear wheels off. All seems good.

It can’t really hurt can it?