Undersealing an SLK
Discussion
Forced isolation means I am getting jobs done....I have been meaning to do this for a long time… top up the rust proofing on the car as we want to keep it... its the 5.4 NA V8 
I gave it a coat of waxoyle when we bought it which has kept it nice underneath, but I have since read about the problems with rear subframe corrosion… so I decided to give it a good coating in this area, but also spray wax into the actual subframe itself again.
I have a spray pot which I can pressurise up to 120 PSI and made a spray head that fits into some 4mm tube. the waxoyle atomises nicely so I know I have a good coat inside the subframe. gave the sills another good squirt as well!
filth job though....
I gave it a coat of waxoyle when we bought it which has kept it nice underneath, but I have since read about the problems with rear subframe corrosion… so I decided to give it a good coating in this area, but also spray wax into the actual subframe itself again.
I have a spray pot which I can pressurise up to 120 PSI and made a spray head that fits into some 4mm tube. the waxoyle atomises nicely so I know I have a good coat inside the subframe. gave the sills another good squirt as well!
filth job though....
Edited by buzzer on Tuesday 7th April 14:07
funnily enough I have been doing the exact same job - however I used tetrosyl with waxoyl in big aerosols; got a six pack for about £30.
Your car looks well nigh brand new underneath, we had some patches (behind rear arches for example) and I was a bit more targeted (ie. I didn't spray all over cables and driveshafts). Any nooks and crannies and suspicious areas of the back end were done.
I was also changing the front wings (dreaded rust bubbles on the front edge
) and the bonnet (it had awful clearcoat) - luckily got some pristine wings with a bonnet, all in the same 775 colour, factory paint, The good thing about the silver is it's easily the most popular colour, and the colour match is absolutely spot on - so £400 instead of over £2000 my local bodyshop quoted. While under there I cleaned a lot up, waxoyled crossmembers etc and the floorpan behind the front wheels where it isn't protected by the undertray looks particularly vulnerable.
OP - while it looks unlikely that your SLK is going to suffer any corrosion of note in the next decade do take a look inside the top of the suspension turrets - these seem to suffer. Give them a good clean out and get in there with your rust preventer.
Your car looks well nigh brand new underneath, we had some patches (behind rear arches for example) and I was a bit more targeted (ie. I didn't spray all over cables and driveshafts). Any nooks and crannies and suspicious areas of the back end were done.
I was also changing the front wings (dreaded rust bubbles on the front edge
) and the bonnet (it had awful clearcoat) - luckily got some pristine wings with a bonnet, all in the same 775 colour, factory paint, The good thing about the silver is it's easily the most popular colour, and the colour match is absolutely spot on - so £400 instead of over £2000 my local bodyshop quoted. While under there I cleaned a lot up, waxoyled crossmembers etc and the floorpan behind the front wheels where it isn't protected by the undertray looks particularly vulnerable.OP - while it looks unlikely that your SLK is going to suffer any corrosion of note in the next decade do take a look inside the top of the suspension turrets - these seem to suffer. Give them a good clean out and get in there with your rust preventer.
Thanks, I will take another look in the area of the turrets while its still up on the ramp today...
a lot of people say Waxoyle is crap... but I first used it in 1978 on my Lancia Montecarlo and that is still in excellent condition! the current owner often post pictures of it on Facebook!
Its a bit like when people recommend an engine oil... I say how do you know its good? its a very difficult thing to test! Same with rust proofing products... when people say Dinitrol is the best product, how do you know? If you only used it last year! people really get sucked into the advertising hype on products.... I stay with Waxoyle as its proven itself for me over time... and I don't have time left to test another product!
I can remember doing the Lancia with it... I did the area around the window screen by passing the spray tube up from under the dash... Later the interior light was dim... it was waxoyle on the inside of the lens! that's when you know you have a good coating inside box sections!
I have done a few over the years...
a lot of people say Waxoyle is crap... but I first used it in 1978 on my Lancia Montecarlo and that is still in excellent condition! the current owner often post pictures of it on Facebook!
Its a bit like when people recommend an engine oil... I say how do you know its good? its a very difficult thing to test! Same with rust proofing products... when people say Dinitrol is the best product, how do you know? If you only used it last year! people really get sucked into the advertising hype on products.... I stay with Waxoyle as its proven itself for me over time... and I don't have time left to test another product!
I can remember doing the Lancia with it... I did the area around the window screen by passing the spray tube up from under the dash... Later the interior light was dim... it was waxoyle on the inside of the lens! that's when you know you have a good coating inside box sections!
I have done a few over the years...
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