I called BS on those additive claims for a Detroit 60 Series until my own truck proved me wrong

For years I thought the whole 'restore compression' thing with Archoil AR9100 was just marketing fluff for old engines. Then my 2002 Freightliner with a 12.7 started showing blow-by and losing power on hills near Flagstaff. A buddy in the shop swore by it, so I ran a bottle through the oil. After about 500 miles, the blow-by dropped noticeably and it pulled the grade without dropping a gear. What additive results have you guys seen that actually made you change your mind?

3 comments

3 Comments

ruby_grant12d ago

My old Ford's oil pressure came back after trying some Lucas additive, which really surprised me.

margaret_bennett337m agoMost Upvoted

Wow, that stuff really can work! I had a similar scare with my truck last year and the Lucas additive brought the gauge right back up. It's a good fix for old engines that are just a bit worn out.

wesleyjohnson12d ago

@ruby_grant, what was the oil pressure reading before and after you added the Lucas?