I am in the middle of my Auto-RX process for my 95 3.0L SOHC V6 engine. Here is the site where you can purchase it.

www.auto-rx.com

Here is a forum of oil freaks that thinks it is better than sliced bread.

Bob is the Oil Guy

Look under the oil additives section. Many testimonials about this product. Plus it is $25 compared to the $75 for "smokeless" oil.

'90 Montero XLS (Sold, sadly)
'95 Montero LS 160k
'03 Montero Limited 30k