Synthetic Oil

Oil of Choice

  • Castrol Syntec/Edge

    Votes: 236 8.5%
  • Royal Purple

    Votes: 327 11.8%
  • AMSOil

    Votes: 400 14.4%
  • Valvoline Synpower

    Votes: 160 5.8%
  • Mobil 1

    Votes: 994 35.8%
  • Other

    Votes: 662 23.8%

  • Total voters
    2,779

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Jough Blough

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I think i've used just about every oil under the sun to be honest. I always changed it up on my older vehicles, but then again my other cars always had 50k plus on them already so it was worth experimenting. AMSOIL is a lot harder for me to get cause I have to order it and what not. RP is just a quick trip to just about any auto parts store and walmart believe it or not.
My friend’s son went to college in Duluth, MN. In the engineering program. His friends did an internship at AMSOIL. The factory is in Superior,Wi. He said amsoil is mobile 1 with some extra additives.
 

Burla

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I remember some of those old Eaton Fuller syncromesh big truck transmissions in my Mobil Oil days - 16 speeds! (maybe Burla is old enough to have driven one of these gems) Had to park those in a garage up here in the northland, or they wouldn't move in the winter!
Nah, only 10 speed splitters until I got the bees knees 7 speed auto, lol. Specialized heavy delivery trucks, 16/18 speeds arent going to work delivering the hills of frisco daily. We had a driver my close buddy snapped his driveline on a split shift and backed through the store he just deliver too, lol. Oh man that sucked, made the news and everything, thank god he didnt hurt anyone. His truck was one of the last in the fleet that didnt have air brakes, his e brake failed- to heavy. When I went long haul easy peasy miles, they gave me a 7 speed cummins, also made the news because the local media picked up on these "new" trucks they see everywhere. It wasnt trucks, it was just me driving around the same route over and over. Those trucks were a straight dream, but they also kept those out of the city, didnt want automatics with that much weight on the hills.
 

Burla

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My friend’s son went to college in Duluth, MN. In the engineering program. His friends did an internship at AMSOIL. The factory is in Superior,Wi. He said amsoil is mobile 1 with some extra additives.
that's not good, because amsoil's latest formula is low additives.
 

Rod Knock

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I think Toyota is a good company and have built a good rep in the US, but on this TC fluid issue I think they can do better. No GL-? recommendation in the owners manual; would be nice if they added GL-4 to make it clear to their consumers.
Interestingly there's a guy on YouTube called the Care Care Nut that is a Toyota Master Tech, been working on toyo for over 20+ years, and he said that dealerships ALL put 75w90 GL-5 in the diffs and TC unless it warranty work; warranty work being the only time the toyo fluid is used. Whatever bulk 75w90 GL-5 they have or a quick run to the parts store is standard operating procedure.
I wouldn't worry too much about it. Red Line uses a non-corrosive formula for their 75W-90 GL-5 gear oil. Email Dave or I will, and ask about the copper corrosion test. I wouldn't be surprised if it's 1a/1a. Most modern gear oils are safe, with a few exceptions, like AMSOIL Severe Gear, which is 1a/1b. Still, drain it when the MT-LV gets there.
 

HEMIMANN

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Just ordered some PUP 5W-30 from Wally World for mama's go cart.

Wally World will not stock PUP @ stored, nor let you pick up from a store. Delivery ONLY.
Me suspects "supply chain" loss-prevention, as the retailers call it.

FYI
 

HEMIMANN

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My friend’s son went to college in Duluth, MN. In the engineering program. His friends did an internship at AMSOIL. The factory is in Superior,Wi. He said amsoil is mobile 1 with some extra additives.

Well yeah - even the Amsoil factory guys in Banks' recent videos admitted all the base stock is brought in via rail tankers. So they went on the sales pitch that ensure highest standards of quality, have rejected tanker loads for water emulification, test-tweak additive recipes, etc. etc.

They may be truthful, it seems probable compared to field and audit test reports (not just those done by Amsoil). Mobil used to make their own base stocks, some additives (others purchased from Lubrizol - a top supplier), their own recipes, and packaging. Their Cicero, IL Lube Blending Plant was state of the art in the late 80's (yes, I'm old) - with inline flow blenders instead of batch barrels.

Since Exxon sucked them up, I haven't been impressed. Maybe they're staging a comeback with these 0W-40 recipes? Who knows, unless we have an insider mole report.
 

HEMIMANN

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I like toyota, I like old tech, my 2010 rav 4 was something you could have bought in the 90's, not overly complicated. A sleeper is Nissan, they also take a long time before embracing the craziness you see with all the american makes and honda. Sadly nobody really makes a good truck anymore, so you end up picking the best of the 3 evils, but for suv's and sedans you can't go wrong with Toyota or nissan. Now that is probably changing, I don't follow it, but depending on the application do some research, those old tech toyotas and nissans are the best thing going not considering trucks. For a small truck pre last gen nissans are just dang near bullet proof. The best truck company ever couldn't even field a small truck, lol? But they can't compete with the big 3 in real trucks, but they could have? For some reason decided not to. Buy a new di honda, chances are you will be replacing the transmission at least once.

We looked at Honda and (believe it or not) Chevy Equinox, along with the Mazda CX-5 we bought. All three were about equal comfort and room, very nice. EXCEPT - both the Chevy & Honda only came with mousemotors and chain transmissions. 1.5L engines. They wheezed and roared trying to accelerated onto an interstate highway.

Only the Mazda offered what we considered a 'normal' size 4 cylinder engine, 2.5L (2.0L @ the smallest), and turbocharged. The only vehicle that could pick up and merge into high speed traffic nicely. Honda & GM quit putting any larger 4 cylinder or V6 engines in their midsize SUV's. Unacceptable, even dangerous.

P.S. - to top it all off, the Mazda was ~ $1,000 less than the other two, and made only in Japan (quality control). Sold!
 

Burla

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Think about it, the last decade amsoil went away from their commitment to group 4, mobil one went to group 4 oils with stay in grade 0 winter rated oils, and both of them committed to sn/sp rated oils, meaning resource conserving and low calcium, both went thin by choice. UOA's have shown both can have high moly. Someone would say that is an insult someone saying amsoil is m1 with high additives, but if you don't go to ester based, super high moly, high zinc, can't you say most of those oils are similar? I think where you will get performance is in the 40 weights, then your amsoil will be thicker, but everything they have done has brought them closer to m1.

latest 5w30 amsoil, moly looks good, everything else is low additive low viscosity?

Latest m1 very good moly and thicker.

IMO the difference between the two is amsoil kicked up mag to maintain their high interval, kicked up moly, but m1 is thicker. Everything else is a wash? You knew this would happen when amsoil went full api friendly formulas. If you put them next to a redline uoa, you would see a real difference.

screenshot_20220627-122807-2-jpg.105611

screenshot-2022-07-08-095817-gif.107128



m1 uoa

amsoil ss 5w30 uoa
 

HEMIMANN

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@Burla - Amsoil went away from Group 4 base oil? I guess I didn't follow this. Because of API SP? Shorter drain intervals negating need for PAO longevity? Other?
 

Hemi395

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Just ordered some PUP 5W-30 from Wally World for mama's go cart.

Wally World will not stock PUP @ stored, nor let you pick up from a store. Delivery ONLY.
Me suspects "supply chain" loss-prevention, as the retailers call it.

FYI
I haven't seen PUP in the wild yet, I've had to order it online every time I used it. That is IF I could find it online....
 

HK1837

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2021
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5.7
We looked at Honda and (believe it or not) Chevy Equinox, along with the Mazda CX-5 we bought. All three were about equal comfort and room, very nice. EXCEPT - both the Chevy & Honda only came with mousemotors and chain transmissions. 1.5L engines. They wheezed and roared trying to accelerated onto an interstate highway.

Only the Mazda offered what we considered a 'normal' size 4 cylinder engine, 2.5L (2.0L @ the smallest), and turbocharged. The only vehicle that could pick up and merge into high speed traffic nicely. Honda & GM quit putting any larger 4 cylinder or V6 engines in their midsize SUV's. Unacceptable, even dangerous.

P.S. - to top it all off, the Mazda was ~ $1,000 less than the other two, and made only in Japan (quality control). Sold!
Sounds like you have similar criteria to me! When we went looking for a replacement for my Mrs's V2 Monaro (LS1 auto) we drove all the SUV's and they all had tiny sewing machines under the bonnet (hood in USA speak!). Only the Lexus RX350 had anything decent, a 2GR and made in Japan. All of our overtaking lanes on non-highways in Australia are uphill, and the roads are often awash with sub 3.0L diesels towing caravans unable to hold the speed limit (100-110kmh). Unless you have some overtaking power you are screwed. Same issue with replacing my Hilux with supercharged 1GR V6 (Japanese/Thai Tacoma), everything in Australia is baby over-boosted diesels and cannot accelerate, hence the investment in the DS Ram 5.7. Although Ford have just announced they are bringing out a Ranger Raptor here with a turbo V6 petrol engine (current example has this gutless 2.0L bi-turbo diesel), although you can't get that engine outside of a Raptor and it looks like it belongs in front of a LGBQabcdefg+ parade float.
 

Burla

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Amsoil's statement on group 4 was posted maybe 8 years ago, it is in the ether somewhere. Prior to that, all of their, marketing was group 4 oils. Corey's uoa will really tell the story, how close to starting operating temp viscosity is it in his hemi. Let the facts be what they are. It has been constantly changing, not like redline 5w30 which hasnt changed at all. Looking forward to seeing the result first hand, or second hand, whatever...
 

Hemi395

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Amsoil's statement on group 4 was posted maybe 8 years ago, it is in the ether somewhere. Prior to that, all of their, marketing was group 4 oils. Corey's uoa will really tell the story, how close to starting operating temp viscosity is it in his hemi. Let the facts be what they are.
I'm at 4300 miles now, probably will let it go to 6000 or so before changing it. Or should I let it go longer?

Kinda feel like I'm playing with fire lol
 
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