Well that's a good question!
Have a look at this link:
https://www.inoxmx.com/products/mx5-plus-ptfe-lubricant/
I first got a bottle of INOX MX3 from 'Mr Modifier' here on forum few yrs ago, it lasts for ages but I bought another one when it got half empty, just in-case it disappeared (it didn't and you can now get it easily, even from Pendles In UK).
So second bottle I bought ended up being MX3FG - the FG means food grade - basically same as MX3 but certified safe/non-toxic etc. to use in food machinery/food industry etc.
So unless you track is in a 'demanding environment' I think INOX MX3 will be fine. Also I don;t know if there are any downsides to MX5, probably not if it's based on MX3 formulae but you never know...
Get both and try one on each lane a report back?
"INOX MX5 PLUS is the ultimate formula that takes the original INOX MX3FG and adds the high grade friction modifier Polytetrafluoroethylene (PTFE) for an even higher, super-slick standard of lubrication in demanding environments. it's even NSF H1 registered for incidental food contact.
If you need to handle high speed, high loads, constant friction and extreme pressure, INOX MX5 PLUS with added PTFE is the ultimate lubricant to get the job done."
Have a look at this link:
https://www.inoxmx.com/products/mx5-plus-ptfe-lubricant/
I first got a bottle of INOX MX3 from 'Mr Modifier' here on forum few yrs ago, it lasts for ages but I bought another one when it got half empty, just in-case it disappeared (it didn't and you can now get it easily, even from Pendles In UK).
So second bottle I bought ended up being MX3FG - the FG means food grade - basically same as MX3 but certified safe/non-toxic etc. to use in food machinery/food industry etc.
So unless you track is in a 'demanding environment' I think INOX MX3 will be fine. Also I don;t know if there are any downsides to MX5, probably not if it's based on MX3 formulae but you never know...
Get both and try one on each lane a report back?


"INOX MX5 PLUS is the ultimate formula that takes the original INOX MX3FG and adds the high grade friction modifier Polytetrafluoroethylene (PTFE) for an even higher, super-slick standard of lubrication in demanding environments. it's even NSF H1 registered for incidental food contact.
If you need to handle high speed, high loads, constant friction and extreme pressure, INOX MX5 PLUS with added PTFE is the ultimate lubricant to get the job done."