how do you change a front seal?

You do hot have to remove the oil pan. you just remove the front timing cover, pull the harmonic balancer, and pull the seal with whatever tool best does that job.

Here is a guide that will give you an idea of what you are in for.

https://www.2carpros.com/articles/front-main-seal-replacement

You will need to remove the harmonic balancer this guide will show you how.

Please let us know if you need anything else to get the problem fixed.

Cheers