Fully Synthetic with high levels of zinc?

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DR1

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I know this post should prob be in the lawn mower section,but I'm wonder if the people in this section have more knowledge regarding this.
I know royal purple offers the hps oil that's high in zinc,but are there any others that are available,and cost less than the $10 royal puple qt bottles?
 
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You mention lawn mowers, so I assume you're thinking about OPE use. I would suggest looking at some Heavy Duty Diesel Oils like Shell Rotella T6 5W40 (great choice for OPE). Here's a virgin oil analysis:

https://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2566898

Also possibly worth noting, I believe T6 recently removed the Gasoline spec SN from the labeling, which technically disqualifies it from use according to most OPE engine manuals, but they have said that the formulations have not changed. I personally will keep using T6 in my OPE and motorcycles.

https://bobistheoilguy.com/forums/ubbthr...e_r#Post4465518
 
I run a commercial mower in severe heat in florida everyday for many many hrs per day
 
I would look at Amsoil Z-Rod 10W-30. It's fully synthetic and high in zinc. As an added bonus, it has a high amount of rust inhibitor, so that when your equipment is in storage over the winter, it's not as likely to rust internally. But it's probably not much cheaper than the Royal Purple unless you buy it in bulk.
 
In that climate and use, I may consider not bothering with a synthetic. I'd use whatever is the cheapest 15W40 HDEO (Rotella, Delo, Delvac). If you want to run a full synthetic, any of the above brands will still work, although, I don't know what you would gain (maybe longer oil change intervals? lighter wallet?).
 
Using OPE in Florida for long duration, aren't you more worried about HTHS than zinc? Does the amount of zinc even matter to that engine?
 
I put about 15 hrs this week in high 90's F with extreme humidity and no breeze.
I got the oil covered and I use gasoline additives per the makers advice.
I started to wonder if I should up the octane in the gas to premium.
On the oil- I don't like 10w30 here. I'm using 15w50 FS but I have seen T6 hold up to the worst of the worst.
if I didn't have a stash of other oil I'd go with that.

Originally Posted By: lawnguy
I know this post should prob be in the lawn mower section,but I'm wonder if the people in this section have more knowledge regarding this.
I know royal purple offers the hps oil that's high in zinc,but are there any others that are available,and cost less than the $10 royal puple qt bottles?
 
Originally Posted By: lawnguy
I think I might have found something really good at the best price possible? Your thoughts ?????

https://www.walmart.com/ip/Shell-Rotella-T6-5W-40-Heavy-Duty-Engine-Oil-1-qt/763797918#about-item


Another good choice. But, buy it in the gallon size! https://www.walmart.com/ip/Shell-Rotella-T6-5W-40-Diesel-Motor-Oil-1-gal/102646780

Other options:
https://www.walmart.com/ip/Chevron-Delo-400-Low-Emission-Synthetic-5W40-Motor-Oil-1-gal/20896087
https://www.walmart.com/ip/Mobil-Delvac-1-ESP-5W40-Gal/167510327

All of those oils above and all of them listed above will work and work well.
 
I use Mobil 1 or Castrol edge 0w40 in all 4 stroke OPE engines, both have over 1100 ppm zinc. Snowblowers start first pull in zero degree weather (I dont even bother with the electric starter) and lawnmowers do well with the 0w40 in summer heat.
For oils with low zinc in the 700-800 ppm range use 1 oz of this per qt of oil to bring it up to about 1100-1200 ppm.

https://rislone.com/product/3x-concentrated-engine-oil-supplement-with-zinc-treatment/
 
Originally Posted By: lawnguy
Mobil 1 has 1100 ppm zinc?

As far as i know the 0W-40,5W-50,15W-50, the Racing 4T motorcycle oils and the 0W-30 and 0W-50 Racing oils do.
The rest do not.
 
High ZDDP Full synthetic oils :
Amsoil Z-Rod
Redline?
Some Motul oils?
Valvoline VR1 Syn.
Joe Gibbs
Mobil 1 0W-40, 5W-50, 15W-50 , Racing 4T Motorcycle oils and M1 Racing oils.
Shell Rotella T6 Full syn?
 
RT6 is a decent option, but the add pack looks pretty stripped out to me.

The best oil you're ever going to stick in an air cooled engine in FL in my experience is the VR1 syn. It is obviously more expensive than RT6, but is head and shoulders above RT6 as an oil.
 
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