When can I use '4H' in my new 4X4?

Using 4H to increase stability and traction. What are the consequences if you get this wrong? Specifically, a viewer asked if it's OK to use 4H on wet main roads, or unsealed roads. Essentially, I don't think it is, because it will increase driveline wear, and in extreme situations it might break something expensive, and also leave you stranded. AUTOEXPERT OLIGHT DISCOUNT (These are awesome.) https://bit.ly/3pA9nYi 12% off code: AEJC (exclusive of sale periods) Help support my independent reporting, securely, via Patreon: https://www.patreon.com/user?u=54778969 Save thousands on any new car (Australia-only): https://autoexpert.com.au/contact AutoExpert discount roadside assistance package: https://247roadservices.com.au/autoex... Did you like this report? You can help support the channel, securely via PayPal: https://www.paypal.com/cgi-bin/webscr...