Hello folks, My girl is a '67 CJ5 with the original F-134 Hurricane. And yes, I'm still loving my 4 banger. After a long restoration period including the complete rebuild of the engine, the Jeep is so smooth, I'm in Nirvana. Gonna take a long road trip in a few days. Where I'll be heading is the Southern Mediterranean region of Turkey; lots of mountains, amazing scenery, turquoise water and ancient cities. All those are fine but I'm a little concerned about the hot weather, something that the Hurricane doesn't appreciate much. Im talking about driving/climbing on the mountain roads on 2nd gear, with a camp gear loaded Jeep; air temperature 30 celsius/86 fahrenheit My F-134 has never been so economical about the oil. I'm driving her daily in the very crowded city of Istanbul. She likes to consume some oil with gasoline (I'm running on LPG most of the time, something that makes my Jeep consume even more oil.) especially Im stuck in traffic and if I have to keep her at idle for some time. But I know these engines are known for that oil consumption thing and it's not a big issue for me to add oil at the end of a long Jeepin' day, or whenever the oil dipstick tells me to. However, a very knowledgeable friend about mechanics of mine who actually worked a lot more than I did during the engine rebuild process, suggested me to use this (below photo) oil additive when Im adding some oil next time on the road to Mediterranean. He says it will increase the viscosity of the oil and therefore the oil will keep its quality in greater heat, which will eventually decrease my Hurricane's oil consumption - in theory. I never used any kind oil additives before in any of my vehicles. I never needed any either. I'm completely fine with adding oil after I wake up in my sleeping bag and while my eggs are cooking on my cast iron camping pan; you know... If someone else would have suggested me to use this product, I would deny him. Cause you know, I'm cool with adding oil, never had any issues about it and its good to show some interest to my girl. And I never let my girl run below the minimum oil level. But this time its someone I really trust and he said he's been doing this for his old cars for many years, including his old Willys CJ5. So he tucked this can of oil additive in under my armpit and said good luck. Hmm... I've read some comment on the internet telling that those kinda additives will stick to engine parts like a gulp and it will be so hard to clean them off later. Has anyone ever used these kinda additives? What do you think about that, any suggestions? Does it worth taking the risk. I know my next oil adding session is close...This product looks kinda cheap and ineffective to my eyes but hey, so do our old Willys' but hell they are not!