High zinc conventional engine oil?

TJ Starting

TJ Starting

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I was looking around on the web yesterday seeing what I could find for Valvoline conventional motor oil and came across this among other things.

https://www.amazon.com/dp/B00DJ4FMK2/?tag=wranglerorg-20
Looks interesting and at $40 doesn't sound to bad. Any thoughts on this? I know the 4.0 ain't no performance engine or anything fancy but is there and benefits of have the extra zinc in there for us? I already ordered the non high performance zinc stuff but though about maybe ordering a box to try next.
 
AjRagno said:
https://www.hyperlube.com/blog/engine/the-effects-of-zinc-oil-additives-on-older-engines/
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That article by an oil additive company shilling this:

HPZ212_web818.png
 
SPECWAR said:
The same guy that claimed you can run 87 octane fuel in an engine requiring at least 91 octane fuel. Think I’ll pass .
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Listen to the Valvoline guy, not the show host.

The Valvoline spokesman responds specifically to situations calling for use of the Valvoline racing oil linked in the first post and states that the extra ZDDP additive in their racing oil is largely unnecessary in non-racing situations after engine break-in . He also explains why zinc and phosphorus additives are hard on catalytic converters.
 
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The shop that rebuilt my old Ford engine said use nothing but VR1 (20w-50). It has old flat tappets that need it. While ours do as well the cost is very high considering how long these engines last on low zinc oils they were designed for. From time to time I read the newsletter from Blackstone Labs. They test motor oils and as far as engine life their tests show how often you change your oil matters more than the type. If you want slightly higher zinc you can use 15w-40 diesel, it is affordable and probably not a bad idea when it gets hot.
 
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pagrey said:
The shop that rebuilt my old Ford engine said use nothing but VR1 (20w-50). It has old flat tappets that need it. While ours do as well the cost is very high considering how long these engines last on low zinc oils they were designed for. From time to time I read the newsletter from Blackstone Labs. They test motor oils and as far as engine life their tests show how often you change your oil matters more than the type. If you want slightly higher zinc you can use 15w-40 diesel, it is affordable and probably not a bad idea when it gets hot.
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I think the diesel oils contain other additives with higher ash burn which is not so good so you get the zinc but too much phosphorus (I think?) 15w 40 diesel oils are the cheapest oils in Australia.
 
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Mr. Bills said:
Listen to the Valvoline guy, not the show host.

The Valvoline spokesman responds specifically to situations calling for use of the Valvoline racing oil linked in the first post and states that the extra ZDDP additive in their racing oil is largely unnecessary in non-racing situations after engine break-in . He also explains why zinc and phosphorus additives are hard on catalytic converters.
Click to expand...
My bad. Host is an ass.
 
Fishtaco said:
I think the diesel oils contain other additives with higher ash burn which is not so good so you get the zinc but too much phosphorus (I think?) 15w 40 diesel oils are the cheapest oils in Australia.
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Diesel oils might have some of that but I think Chrysler also recommends these oils in countries where 10w-30 is not as common so I think it's okay. All 15w-40 that I can buy say "SN" so they are fine but I guess they could be different in other places.
 
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