: JB Engine Oil Treatment

Golden 69
03-05-13, 01:32 PM
Question, Has anyone used this product in their engines? Did some research since I never heard of it before, and read a lot of positive responses. Just wanted to see if anyone had any experience/results first hand from the forum. Thanks

03-05-13, 04:20 PM
Take this from a long-engine builder: Run the proper viscosity oil for your engine and leave the snake oils on the shelf.

When you read lists of "positive responses" remember - anyone can post a response - even the guy who sells the stuff and gets a kickback for every jug. It's a piece of cake for me to log into a site and post "Sub's Olds 455 marine conversion engines are the best".

Golden 69
03-06-13, 09:02 AM
Thanks for the tip. Any brand oil/and viscosity you would recommend? I have approx. 70,000 miles on the bottom end of my 472. Top end has about 6,000 miles. Can't trust what the previous owner used since he wasn't up front about some other issues. Thanks for the help.

03-06-13, 10:47 AM
If the engine is basically sound, runs well, and has no clanks, ticks, thumps or bumps I would recommend running the recommended viscosity oil (10W-30 ???) in a "high mileage" conventional or synthetic blend. Why the "high mileage" caveat ?? These oils have a slightly elevated ZDDP package (zinc/phosphorus anti-scuff additive)(compared to today's SN service oils) that would make your flat-tappet cam a bit happier. And you would still not need to add any additional snake oil.

There ARE proponents and opponents of "high mileage", conventional, blend, and synthetic oils. The above is based on my big engine experience and opinion - others will differ. My truck and Northstar run synthetic oils. The GM 454 and Olds 455 boat engines run Pennzoil LongLife 15W-40 fleet oil - but that's a boat engine, not a car engine. Different beasts.

Google "api engine oil service designations" to read up on what has been done to oil additive packages since 2001. Read everything you can in the AMSOIL site - they're pretty straightforward about engines and oils. Quaker State, Shell and Pennzoil are all part of SOPUS - Shell Oil Products U.S..

Oil brands are like whiskey, women, and guns - everyone has their preference and an internet forum discussion will NOT change their minds.........

Golden 69
03-06-13, 11:58 AM
Thanks again for your help. Will go with the Synthetic higher ZDDP.