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quick search for oils with high Moly came up with these 3
Rotella T6. I used to use the T3 in my 74’ Land Rover and my 85 Merc 300SD I’ve used plenty of Mobil 1 in the past Not really used much valvoline but this was the first result when I searched.
I have been impressed with the new Valvoline synthetic oil formulation, they improved the additive package a lot and it is a full synthetic. It is easy to find over the counter too. Mobil1 has some good formulations in their EP line up. My favourite oil is Redline which has boatloads of Moly , along with Motul, but they are super expensive oils, and too expensive to use for shorter intervals. Amsoil has some good formulations in their higher end lines, a bit pricey too. I never used Rotella before but it has a good reputation.
I think for the cost and ease of finding over the counter the Valvoline synthetic is a nice option, worth a try .
cons - slow drain and you don’t get as much oil out
I don't find it slow especially with a warm engine. I like the idea of the engine running recently before draining to mix things up and get the oil warm so it will flow out fast. Once the flow has ebbed, I pour a little fresh oil in and in a minute or so I can see the super clean oil streaked with a little older oil coming out. That tells me there really is not much oil left in the S2000 oil pan.
Last edited by cosmomiller; Jun 8, 2024 at 04:35 PM.
Zinc and Moly have fallen out of favor. Hexagonal Boron Nitride is the new hotness, it has better thermal and tribological properties than moly and zinc. When you see boron in your UOA it's a friction and wear additive, it's not just a dispersant/detergent. More zinc and more moly doesn't always mean better oil, there is such a thing as too much zinc, or too much moly.
When you see boron in your UOA it's a friction and wear additive,
Thanks. Wear additive not wear!
I had to read this three (3) times as when I checked my reports Boron took a big jump from 6 (six) ppm in my initial sample in 2015 to it's current average of 140 - 190 starting in 2018 and I got immediately concerned. Change in motor oil.
Yep. It's a great anti-wear additive, they started putting it in the oil because of timing chains, extends the life of the guides and chain, the fact that it helps everywhere else is a bonus.
I don't find it slow especially with a warm engine. I like the idea of the engine running recently before draining to mix things up and get the oil warm so it will flow out fast. Once the flow has ebbed, I pour a little fresh oil in and in a minute or so I can see the super clean oil streaked with a little older oil coming out. That tells me there really is not much oil left in the S2000 oil pan.
agreed, no issues with flow when engine is warmed up.
Yep. It's a great anti-wear additive, they started putting it in the oil because of timing chains, extends the life of the guides and chain, the fact that it helps everywhere else is a bonus.
Zinc has fallen out of flavour, as engine designs have changed and environmental reasons. I still like moly though, and some of the better 20 weight oil manufacturers went with increased moly as they thinned out their oils, so that tells me the cushioning effect is helpful with moly additives. Even some of the oil manufacturers that avoided moly in the past started using it in increased levels with their thinner viscosities. I'll take boron whenever it is there but I want moly in my oil still.
Zinc has fallen out of flavour, as engine designs have changed and environmental reasons. I still like moly though, and some of the better 20 weight oil manufacturers went with increased moly as they thinned out their oils, so that tells me the cushioning effect is helpful with moly additives. Even some of the oil manufacturers that avoided moly in the past started using it in increased levels with their thinner viscosities. I'll take boron whenever it is there but I want moly in my oil still.
Moly has changed as well. There's 2 versions of Moly MoS2(molybdenum disulfide), which is a dry lubricant similar to graphite or tungsten disulfide, and Molybdenum Dithiocarbamate(this mouthful is abbreviated as MoDTC), this flavor of Moly is oil soluble, and doesn't fall out of suspension. It reacts with zinc and phosphorous and precipitates as MoS2.
