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Bars Leaks Oil Additive 4405 Rislone; Use With Concentrated Engine Oil; Use To Prevent Camshaft Wear/Reduces Piston Scuffing/Increases Engine Life; 11 Ounce Bottle; Single; With Zinc Treatment

<ul><li>Prevents Camshaft Wear. Reduces Piston Scuffing And Increases Engine Life</li><li>High Performance Formula Stabilizes The Motor Oil To Insure Against Viscosity And Thermal Breakdown</li><li>Reduces Friction And Wear, Especially At Start-Up, Helping To Eliminate Dry Starts. Less Friction Means Less Wear And A Cooler Running, Longer Lasting Engine</li><li>Clinging Action Keeps Bearings And Other Internal Engine Parts Lubricated Where Normal Oil Fails</li><li>Enhances Regular Motor Oil Turning It Into A High Performance Lubricant For Use In Older Engines And Racing Applications</li><li>Rislone Works With All Petroleum Based Motor Oils Including Conventional, High Mileage And Synthetic Formulas</li><li>Makes Newer Oils Work In Older Engines</li><li>No Supplier Warranty</li></ul>

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Oil Additive, Rislone ®, Use With Concentrated Engine Oil, Use To Prevent Camshaft Wear/ Reduces Piston Scuffing/ Increases Engine Life, 11 Ounce Bottle, Single, With Zinc Treatment

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Lacks Zinc

Old cars from the 60s like my 63 Valiant  need a zinc/phosphorous supplement for protection of the camshaft and valvetrain as it says on the label. Newer oils don't have this, or as much of it, so anyone who runs any old car regularly is wise to use one. Of course this car has a Slant Six and it could likely run bacon grease and still keep going. However this is some extra protection when an engine is using oils and other lubricants that were never even dreamed of back in 1963. 
2nd bottle I have purchased. Will add it when I get the oil changed this March or so.

I like Rislone products and just started using their Engine Treatment on an 86 Olds Calais 2.5 [136,000 miles] It seemed to make a naturally loud engine quieter and a bit smoother. It will go into every crankcase from this time forward.

Vital Supplement for '60s Cars

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I didn't know this product before, but I liked it

Nice to know I can still buy this off the shelf.

[This review was collected as part of a promotion.] I installed a rebuilt 460 into my 1980 F350. I needed break in oil to run in it. All the oils I found were not in stock. Instead, I got 6 quarts of 30 weight and the zinc additive to run for the breakin. Couldn't be happier with this setup.

Just the ticket

Rislone

I own a Auto Repair Shop in Simi Valley California. I have been using this stuff for years. Its Not just for Engines. While I use this in all cars with Flat Tappet Cams. I also Use this for Bearing Lube. I use it on anything that is Metal and Needs Lubricant. Wheels on a Floor jack, Bearings on the Swamp Cooler. Door hinges, hood latches, and basically anything you would spray with WD40, use this instead. You will only use this from that point on.

Best Metal Lubricant on the Planet

[This review was collected as part of a promotion.] I use this in my older cars with flat tappet camshafts. Newer oils do not have zinc in them, which is needed to properly protect the can and lifters from premature wear. It's no fun having to tear down an engine because the camshaft failed due to newer oils.

A must for older engines

[This review was collected as part of a promotion.] Seems to run smoother  I added this becausei needed more zinc for my cam than the oil had in it but since adding it  the engine seems smoother and I believe the gas  mileage has increased slightly  also. I will  to add it to my other cars at their next oil change too.

Seems to run smoother