There are a few ways to remove heat stains from leather. You can try massaging the leather with something like olive to redistribute the oil to help replenish the oil. You can also try a shoe repair place to get leather products. There are also some leather-safe pens that can be used to color those marks in.
how do you remove scuff marks from a smooth leather purse
To remove scuff marks from white leather- use nail polish remover that contains acetone. Dip cotton swap in nail polish remover and rub onto mark.
If it is a smooth leather you could try a leather cleaner. There are good ones on the market that will remove things like this. If the it is suede you could use a suede brush on it and brush up the nap.
the oils are in the leather; a cleaner will remove dirt particles on the leather, but won't touch what is embedded in the leather. Try advleather.blogspot.com
Buy clean leather.
fleece holds more heat then leather, the fleece has many air pockets and resists heat transfer better than leather. leather is good for blocking wind chill but performs poorly as an isolator.
The best way to remove motor oil from leather is to use leather cleaner. You can also try to use Oxy-clean.
Unfortunately, there is no known way to remove bleach marks from silk.
somehow
No, your leather laptop case will not be damaged in heat. It will be oaky to take. However, it is never a good to leave your laptop with our without a case in the heat.
how can i get diesel fuel off my leather jacket
I dont think so because I have been using it to heat my leather event riding boots which cost thousands and if anything it is making them softer. Heat e.g. steam will open up pores in leather and soften it up so I dont think a bit of heat will damage it I know leather cannot be set on fire so unless it is excessive radiator heat then I dont think it can :)