Quick question:
In my Mitsubishi Lancer 1 of the 4 bolts (I need to have the other 3 checked) of the front crossmember had rusted to the point it broke in half. The head has no signs of corrosion. Only the part that was in the chassis has corroded.
I bought a new one (not OE but of exactly the same strength) and I'm thinking what can I use to prevent the new one from rusting.
Grease of course offers protection, but is it OK to be used with bolts? I'm asking because I'm not sure if any kind of lubricant would be indicated for safety reasons. Do threadlockers as Loctite offer any protection against corrosion>? Any other alternatives?
Thanks in advance!
Best way to prevent bolts from rusting?
- Thread starter inquirer
- Start date
There are many types of anti seize, nuclear grade nickel offers the best corrosion resistance with steel but its very expensive, a nickel or copper anti seize will do the job well enough. Blue loctite also acts as an anti seize compound as well as a thread locker but not quite as good as a dedicated anti seize product.
Never-seize
Originally Posted by Trav
There are many types of anti seize, nuclear grade nickel offers the best corrosion resistance with steel but its very expensive, a nickel or copper anti seize will do the job well enough. Blue loctite also acts as an anti seize compound as well as a thread locker but not quite as good as a dedicated anti seize product.
Originally Posted by Donald
Never-seize
The greases do not contain the metallic particles. There are anti seize compounds that are non metallic that use other substances like graphite to prevent fastener seizure.
Yes anti seize has lubricating properties and torque should be reduced by roughly 20% when tightening, on large diameter fasteners is not really an issue.
Can you get Krown T40 in Greece? Might be worth dipping a nut and bolt into a tub of Krown before installation and then giving them a light spray once a year or so.
Otherwise, grab some lithium multipurpose grease, like you'd use for CV joints and smother the nut and bolt before fitting. It's about all you can do.
Last edited:
Originally Posted by Trav
The greases do not contain the metallic particles. There are anti seize compounds that are non metallic that use other substances like graphite to prevent fastener seizure.
Yes anti seize has lubricating properties and torque should be reduced by roughly 20% when tightening, on large diameter fasteners is not really an issue.
Originally Posted by Bailes1992
Can you get Krown T40 in Greece? Might be worth dipping a nut and bolt into a tub of Krown before installation and then giving them a light spray once a year or so.
What year Lancer?
Sounds like you were lucky with getting the corroded threaded part out.
Does replacing the other 3 sound like a good idea?
You'll find that the quality of the bolts used has everything to do with the speed of rust propagation.
Look under several vehicles of approximately the same age and you'll see varying degrees of rusting due to varying degrees of material quality.
Originally Posted by Kira
What year Lancer?
Sounds like you were lucky with getting the corroded threaded part out.
Does replacing the other 3 sound like a good idea?
You'll find that the quality of the bolts used has everything to do with the speed of rust propagation.
Look under several vehicles of approximately the same age and you'll see varying degrees of rusting due to varying degrees of material quality.
Originally Posted by Bailes1992
Otherwise, grab some lithium multipurpose grease, like you'd use for CV joints and smother the nut and bolt before fitting. It's about all you can do.
Originally Posted by inquirer
Quick question:
In my Mitsubishi Lancer 1 of the 4 bolts (I need to have the other 3 checked) of the front crossmember had rusted to the point it broke in half. The head has no signs of corrosion. Only the part that was in the chassis has corroded.
I bought a new one (not OE but of exactly the same strength) and I'm thinking what can I use to prevent the new one from rusting.
Grease of course offers protection, but is it OK to be used with bolts? I'm asking because I'm not sure if any kind of lubricant would be indicated for safety reasons. Do threadlockers as Loctite offer any protection against corrosion>? Any other alternatives?
Originally Posted by kschachn
Originally Posted by inquirer
Quick question:
In my Mitsubishi Lancer 1 of the 4 bolts (I need to have the other 3 checked) of the front crossmember had rusted to the point it broke in half. The head has no signs of corrosion. Only the part that was in the chassis has corroded.
I bought a new one (not OE but of exactly the same strength) and I'm thinking what can I use to prevent the new one from rusting.
Grease of course offers protection, but is it OK to be used with bolts? I'm asking because I'm not sure if any kind of lubricant would be indicated for safety reasons. Do threadlockers as Loctite offer any protection against corrosion>? Any other alternatives?
Stainless steel fasteners . And either heavy grease or , maybe , even , wax ( thinking of Johnson Paste Wax ) .
When removing rusty fasteners , heat to dull red hot & then spray with your favorite penetrating oil . Repeat as needed . Try turning the fastener back and forth , a little at a time .
Best of luck to you .
Oh okay. For me, specifically preventing corrosion was my goal since the idea of one of the bolts snapping off in a blind hole was pretty much a nightmare scenario.
And it's not just air you're keeping away it is moisture too. You want something that resists washout very well and the coating I mentioned is specifically for that application. That's not the primary goal of an anti-seize compound.
Originally Posted by inquirer
Originally Posted by Trav
The greases do not contain the metallic particles. There are anti seize compounds that are non metallic that use other substances like graphite to prevent fastener seizure.
Yes anti seize has lubricating properties and torque should be reduced by roughly 20% when tightening, on large diameter fasteners is not really an issue.
Originally Posted by Bailes1992
Can you get Krown T40 in Greece? Might be worth dipping a nut and bolt into a tub of Krown before installation and then giving them a light spray once a year or so.
This thread has made me do some research into the subject of grease. It's certainly something I don't look into too much, I usually just buy a pot of grease that says it's suitable for my application i.e. if it says it's suitable for CV joints and I'm packing out a CV joint then I'll use it.
It seems a Calcium Sulfonate grease it superior for keeping water out and corrosion protection. Look for a marine specific grease.
Originally Posted by WyrTwister
Stainless steel fasteners . And either heavy grease or , maybe , even , wax ( thinking of Johnson Paste Wax ) .
When removing rusty fasteners , heat to dull red hot & then spray with your favorite penetrating oil . Repeat as needed . Try turning the fastener back and forth , a little at a time .
Best of luck to you .
Originally Posted by kschachn
Oh okay. For me, specifically preventing corrosion was my goal since the idea of one of the bolts snapping off in a blind hole was pretty much a nightmare scenario.
And it's not just air you're keeping away it is moisture too. You want something that resists washout very well and the coating I mentioned is specifically for that application. That's not the primary goal of an anti-seize compound.
Originally Posted by Trav
Use a nickel anti seize and torque 20% less eg 100nm is spec tighten to 80nm.
Originally Posted by Bailes1992
This thread has made me do some research into the subject of grease. It's certainly something I don't look into too much, I usually just buy a pot of grease that says it's suitable for my application i.e. if it says it's suitable for CV joints and I'm packing out a CV joint then I'll use it.
It seems a Calcium Sulfonate grease it superior for keeping water out and corrosion protection. Look for a marine specific grease.
Maybe coat the fasteners with boiled linseed oil, let cure, install, brush once more with linseed oil to touch up where you chipped the coating during installation. Not sure how a cured linseed oil coating affects required torque. I have used this method successfully on lower engine cover fasteners that tend to rust like crazy. I'm talking about clip-on nuts and screws.
Originally Posted by Lubener
Stainless steel bolts.