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2025-08-18 13:11:58
A great product for us people with classic cars.
TT
2025-07-25 17:20:03
Always need to add zinc when changing the oil in my 71 Vette. This product does a great job with my older engine.
Larry Musgrave
2025-06-06 12:25:44
We all know that guy who will buy a $65,000 machine and then only service it once a year with the cheapest oil on the shelf from Rural King or some other place with ultra cheap, home branded, questionably quality oil. Yep. That is my good buddy.So I go to the shop a couple weeks back and he is re-filling the skid steer engine with some ultra cheap, totally not to spec, gas engine oil. I question him and he states that it is perfect oil for the machine being 5W-30. I ask him if it meets the SAE ratings for the diesel, he repeats back that yep... it is 5W-30. So I go grab his New Holland book (C232 track skid steer) and look up the oil requirements, then I look at this junk oil, and I try to explain to him the SAE designations on the back of the bottle and the SAE requirements in the book. He looks at me like I have 3 heads and repeats that it is 5W-30, it is totally good. Someone.... kill me please! He has no clue what I am trying to explain.So I couldn't sleep knowing what he is doing, and I ran to Amazon to see if I can at least get zinc to add to the wrong oil and try to help the cam followers and rockers survive this next year. I found this. I ordered a few bottles and had them shipped to his shop, and I explained to him that these need to be dumped in to at least make an attempt in not prematurely wear the engine that likely is worth $20,000 or more!So the real question is, will he actually dump these into the machine, or will he toss them on a shelf never to be seen again? We may never know. But I bet next winter he will once again shop for the cheapest oil on earth to put in a machine that costs as much as some peoples home. He is who he is, you can never change that.
James
2025-04-30 19:14:18
I put this in the 392 engine as requested per my mechanic to help with internal parts, I know it quiet down some of the ticks that these Hemi engines have seems to do a good job hopefully, long-term it will protect the internals
Matthew Benson
2025-04-24 10:11:02
I'm not a scientist, but I've read enough to know that my old 4.0L inline 6 in my 2000 TJ needs zinc to prolong engine life and minimize rod knock. I add one of these with each oil change, and I'm convinced my now (24 yr old) engine runs a little quieter.
MCB
2025-04-10 15:09:54
Competitive pricing as compared to other brands. Hard to estimate performance of this ZDDP additive (same issue with any brand). If there isn't undue valve train wear in a few thousand miles, then the product is great. (This product is not for modern autos with catalytic converters!!!!)
JB
2025-02-11 11:29:48
If you want to squeeze a couple more miles per gallon out of your diesel RV's engine, you can't beat this additive. Cheap insurance to keep your engine at max performance.
Jeffrey Mansfield
2025-02-02 18:08:31
Good product, use it every 3 or 4 oil changes in our jeep Cherokee XJ'S
claude provencher
2025-01-18 15:40:39
Love it
LunchBoxSteve
2025-01-05 10:38:49
This is a high quality ZDDP product that does what it claims. I purchased it not for a performance application but to add an extra coating in my engine to high pressure areas because my engine has a design flaw with its roller arm cam followers and I wanted to give it the best chance at surviving a long life. I also wanted to use it in my young engine to aid in proper break-in. So far from my oil lab analysis results, before, during and after I can tell that it does infact add the ZDDP it claims, does increase break-in wear, but then also produces lower overall wear on subsequent oil changes where there is just engine oil alone. Also wanted to let everyone know, instead of buying pricey 4-stroke small engine oil for your yard equipment, buy a bottle of this and add it to a 5-quart regular automotive oil and get the same thing but for less expense!
Darrell
2024-12-30 10:55:02
Bought to help with the notorious valve tick. Added one bottle at oil change. Seemed to help. Bought another bottle for next oil change.
George Wyndham
2024-12-11 12:13:44
Have several flat tappet vehicles, this takes the worry away from finding oil with zinc already in it.
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