Amsoil Z-Rod 10W-30 (ZRT) with TBN and TAN

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777
Location
Herndon, VA
Thread starter
I doubt many people will be interested in this VOA, as it's a niche oil, but I think I am going to LOVE this oil for my purposes. I intend to use this oil in all the equipment for my son's lawn mowing/landscaping business, which typically takes 10W-30 in everything. All the equipment is air cooled, some with filters, some without. Being a "heavy" 30-weight, it's just the right weight for the equipment. Plus, it is heavily friction-modified, unlike ASE, (and the MCT I was using). However, similar to the MCT, it has extra corrosion/rust inhibitors, which is great for lawn equipment some of which sees infrequent or intermittent use. Finally, the high TBN should enable me to go an entire season without changing the oil, so I can just change it once a year at the end of the season. Look at the TAN! 4.8! That is the highest virgin TAN I have seen on a motor oil. Also an excellent flash point. Comments?
 
Messages
13,598
Location
Plano, TX
Pretty easy to boost the moly yourself if you so desire. I'm curious why the starting TAN is so high. Maybe a call/email to Amsoil would explain that?
 
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2,439
Location
Mn
True synthetics, like Amsoil, have a naturally high TAN.. Looks to be a very stout oil for a hard driven vehicle.
 
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Messages
321
Location
IL, USA
We've just begun to use this oil in about a dozen muscle/collector cars along with Amsoil HDD. Pulling a couple of plugs showed excellent coverage in the cylinders. We're pleased that Amsoil offers the ZRT and HDD oils. Their specs are superb !
 
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2,995
Location
Cedarbrae, Ontario
Originally Posted By: CMMeadAM
We've just begun to use this oil in about a dozen muscle/collector cars along with Amsoil HDD. Pulling a couple of plugs showed excellent coverage in the cylinders. We're pleased that Amsoil offers the ZRT and HDD oils. Their specs are superb !
Do you have any specs on the HDD? I have yet to find any in the VOA section on this site.
 
Messages
674
Location
Gilbert, AZ
Originally Posted By: dparm
Pretty easy to boost the moly yourself if you so desire. I'm curious why the starting TAN is so high. Maybe a call/email to Amsoil would explain that?
Very true, but why spend the money on expensive oil just to add additive to it. IMO it should already be there. Moly isn't a cure all I myself like it to be included in the the product I choose. Everyone know Amsoil hasn't been big on Moly and they still have success Imagine if this stuff had 300+ moly in it. I promise you you wouldn't see any amsoil haters. I'm wondering if the TAN has anything to do with the base stocks? I have seen other highend syns with a high starting TAN aswell. Maybe some Ester in this product? Pablo?
 
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Messages
321
Location
IL, USA
No VOA's are listed here unless someone contributes to pay for and list the results of a VOA. To us, the HDD has been around a while and is a superb oil. We'll do a UOA after a period of use in the cars it's used in, but we are not the least bit concerned about it's performance potential. We do both VOA's and complete UOA's including TBN, TAN and particle counts ( and more ) on the oils we use.
 
Messages
712
Location
Wenatchee, W.A.
I have 1 or 2 cases of this in my Stash, and have wanted to put 6 1/3 quarts in my 01 SilverStone Metallic Jeep Cherokees 63,620 mile 4.0 for some Good Flat-Tappet protection on those 4,200 RPM Jaunts.
 
Messages
15,013
Location
Canada
Thanks for poting this - was ver curious about this oil. I too thought it would have far more moly and boron in the mix, but still a very stout oil. High TAN and flashpoint indicate large amounts of Esters in the base oil.
 
Messages
10,146
Location
Burlington, Ontario, Canada
An interesting oil with a lot of phos' (1313 ppm). With a HTHSV of 3.6cP it's heavier than most cars it's intended for actually need; it's almost if not a 40wt oil. Of course you could always cut this oil 50/50 with one of Amsoil's 20wts and have a lighter 30wt still with a Phos' level over 1,000 ppm. I do like the HHD 5W-30 better for it's higher 169 VI and slightly lower HTHSV of 3.5cP.
 
Messages
15,013
Location
Canada
Originally Posted By: CATERHAM
An interesting oil with a lot of phos' (1313 ppm). With a HTHSV of 3.6cP it's heavier than most cars it's intended for actually need; it's almost if not a 40wt oil. Of course you could always cut this oil 50/50 with one of Amsoil's 20wts and have a lighter 30wt still with a Phos' level over 1,000 ppm. I do like the HHD 5W-30 better for it's higher 169 VI and slightly lower HTHSV of 3.5cP.
You're absolutely right - this oil would be great to cut with any one of the SS line - they have high moly/boron. That would make a killer oil....
 
Messages
321
Location
IL, USA
Between the two oils, we prefer the HDD too. The primary reason for using the ZRT is not the ZDDP levels, but the very strong rust/corrosion protection it offers over long winter storage. There are few oils available ( other than Joe Gibbs ) that provide this very worthwhile extra benefit.
 
Messages
754
Location
PA
Thanks so much for doing this VOA. This is the oil that I currently have in my Dodge 440. Looks like I'll be continuing to use it.
 
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