MOTUL 8100 EFE X Clean Oil Analysis

Subarus and oil. one of the most frequently asked questions! What oil should you use?! Well I am here to test for you! This is the second installment in oil testing for the car. The first round we used Castrol Edge 5W/30 and the results came out great! Now we are testing the Motul 8100 X-Clean EFE 5W30 Engine Oil to see how it holds up the heat of the EJ257 and normal driving conditions. I hope this helps some of you in your oil choice! The next round of oil will be MOTUL 8100 5W30 SYNTHETIC ECO-NERGY ENGINE OIL.

Disclaimer: All cars respond differently to oil testing. The results shown in this test are from my EJ257 with 28,000 Miles with modifications such as increased oil capacity, AOS and other oil control devices. Your results will vary from mine.

Parts Used:

Aluminum: Pistons, Dirt Entry, Bearings
Barium: Oil Additive
Baron: Internal Coolant Leak, Fuel Additives
Calcium: Oil Additives, Grease, Sea water
Chromium: Cylinder Liners, Rings, Internal Coolant Leak, Dirt Entry
Copper: Worn Gears, Thrust Washers, Cooling System, Assembly Grease
Iron: Cylinder Liners, Crankshafts, Gears, Shafts, Valves, Rust
Lead: Clutch Packs, Cooling System, Fuel Additives,
Magnesium: Oil Additives, Sea Water, Coatings, engine blocks
Manganese: Shafts, valves, Dirt Entry
Molybdenum: Piston Rings, Synchro Gears, Internal Coolant Leak
Nickel: Valves, Valve Guides, Fuel Contamination
Phosphorus: Oil additives
Silicon: Pistons, Internal Coolant Leak, Dirt
Silver: Bearings
Sodium: Internal Coolant leak,
Tin: Cooling System, Bearings, Piston Flashing
Titanium: Turbine components, Valves, Springs
Zinc: Cooling System, Oil Additives

Video Gear That I use

Track: Space Lullaby (feat. Clara Sorace) — Iaio [Audio Library Release]
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A Journey Through The Universe - Lesion X
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Track: Dreams Are Pretty — Seoul June [Audio Library Release]
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[AnonYmous-ztkr]

"I think IR is the scientific name for iron"
*fe: am I a joke to you*

[bbehzadi]

Good video! This is personally why I run motul xcess 5w40 as it doesn’t break down viscosity as fast. Also from my readings the x clean was designed more for new euro emissions over the xcess which has better protection. I also used to have a sponsorship from Puröl which claims to have good amounts of zinc

[blacklilac]

Do you have a playlist for the oil test? I would love to see everything that you have done and/or are doing! It would also be nice to know what filter you use. Can you test Amsoil Signature Series!? I am also surprised you aren't doing the same thing for your diffs. Maybe also a test on gear lube. Amsoil also makes a 100% for diffs that work pretty well. Love the video tho.

[normmetcalfe]

Hey bro! Love watching your videos, I just got my first STI in December, I’m learning lots from you. But I have a new respect for you after this video, I also have chickens lol 👍

[Trenscendent]

Could it also be interpreted that Motul had better cleaning properties which bought those metals into suspension when the other oil wouldn't?

[guzie]

Viscosity is a big one to keep an eye on. Thermal breakdown is big with these engines.

[deionhughes]

10:20 "Molybdenum" is actually an anti wear additive used in oils.. sometimes referred to as a friction modifier, "Boron" is also used as an anti wear additive. Oils like Motul and Amsoil are labeled as 100% synthetic base oil seem to have better lubrication properties and don't need higher amounts of Molybdenum but additive packages will vary across all oil brands. But you will surely find these 2 elements in brand new oils before they're ever ran inside an engine.

[gaivoron]

Bro, of all ppl on youtube you are the true Subaru whisperer! Hypothetically, what would you run in a VA WRX with an intake and a tune?

I have been using Pennzoil Ultra Premium 5w-30 since day one 3k-4k oil intervals the car runs happy. No visual fuel dilution present when used oil is drained.

[Mehaffeyj]

Being that Motul XClean is a high detergent lower Kinetic Viscosity oil I would attribute the slightly higher Elements as a result of the higher flow rates “washing” deposits from older oil intervals. I would be more excited about the drastic drops in the higher friction areas of the motor remember the valve spring cycle more frequently than the crank shaft, the piston rings are the sacrificial element and they were less sacrificed.

[Tatterz]

This channel is bout to go boom with subs in the next 6 months, im calling atleast 50k by january.

[briggzie]

I’m in Maine and have just modified my 2020 STI from stock to stage 3+ and bought from my tuner The 8100 but he recommended 5-40. We have the harsh some sub zero morning, so I’m really excited to see what your results will be on that!

[vinnyfrittitta]

I see your Motul results. I understand Motul did a great job working its way into the Subaru enthusiasts shops. Most feel the Motul is best for the Subaru. Wonder how many Motul guys have tried the proper grade Amsoil in their Subarus.

[nikolawandler]

I always found Castrol and shell were best for my STi. I tried motul, liquimolly, mobile 1, a few other big name brands but the Castrol was always my #2 choice to shell Rotella, buy you can only run Rotella catless.

[onesikm]

So I can’t find your follow up video for this oil series ?

[cal]

can you tell me what the real use of this test? and but the way i saw a lot of different oil tests no one give you the truth but the one with pressure test on the rotor i think give you an indication at lest. one test motul is the best, another test shell is the best, another test castrol is the best just use the one that have the specificacion for your car and that'it.

[TermofDeath]

Finally! I've been waiting forever for another one of these!

[JimMcDuffie]

I'm upgrading to Amsoil 5W30 as I have seen better results over Motul 5W30.

[abTraX]

i used mobil Delvac 15w40 on stock internals Full bolt ons and my car LOVED IT

[zachs.]

I wouldn’t worry too much about those results. I have a WRX with 165, 000 and it still runs smooth (and I still drive it hard occasionally). I would be afraid to see the results on it though since it has so many miles😂 I change every 5, 000 with rotella 5w-40.

[SubiSkank]

I’ve got a 19 STi, bought new and I use Schaeffer’s Supreme 9000 5w-40. I’ve sent a few samples over to Black Stone Labs and all have come back exceptionally well with them suggesting an 8, 000mi interval. I’ve only went as far as 6, 000 for testing purposes but yet change my oil regularly at 3, 000mi. Not sure how much the oil filter attributes to the testing but I use the Mazda oil filter. As well, from what I have seen with the Motul 8100 line.... I’ve seen people say the 8100 X-Clean 5w-30 is best used in n the FA20 and the Motul 8100 X-Cess 5w-40 be used in the EJ25. Maybe something to look into.