Motul 7100 vs 8100

[Kiwi_Roy]

I went to pick up a couple of litres for my V7
The local auto parts didn't have Motul 7100 10W60 but they did have 8100 10W60 in a 1 gallon can
They are both 10W60 100% Synthetic, I was unable to find a breakdown of the Motul part Nos on the www
Anybody know the difference?
Sorry to start an oil thread but it's not like the site is busy at the moment.


On talking to the counter jockey I was told the 8100 is for cars, 7100 for motorbikes but He couldn't tell me why, 7100 is Ester based but I don't know what the 8100 is based on.
I think the 8100 is about half the cost.
(my apologies, when I went back and looked again it was 8100 not 7800, still 2 different 10W60s)

[Muzz]

I looked Roy and the only reference for 7800 was on an overseas site that wouldn't open for me to check the specs.

Can't find it on any of the Motul sites.  May be a lubricant for a specific line of marque?

[greer]

Got me curious, but it's stumped Google.  ???

Sarah

[Bisbonian]

Perhaps try the contact form at Motul?

https://www.motul.com/us/en-US/contacts/new

[RinkRat II]

   WOW Roy, You stumped the forum!! I'm cuious as to a date code on the 7800, possibly an earlier version of the 7100?   

      Paul B

[WHY]

Never heard of 7800, I always get 7100 from Fortnine.ca

[moto-uno]

 Well for what's it's worth I used Motul 8100 synthetic on my last oil change for my 2018 Eldorado . Smooth ,
easy starting , quiet , no change of any type from using the more expensive red lube . Heck it's got Ferrari v-12
on the list of recommended users :) . Peter

[LowRyter]

https://d23zpyj32c5wn3.cloudfront.net/images/product_descriptions/technical_data_sheets/61293/7100_4T_10W-50_%28GB%29.pdf?1580894561

7100 specs per above.

Mr Google doesn't list Motul 7800.   He lists Motul 800 (racing 2 strokes) but he can't find 7800.

[redhawk47]

Well, for starters, you show a photo of Motul 8100 X-Power, not 7800, so we will start with that.
Motul 8100 X-Power is not rated JASO MA2 which means that it is not certified for motorcycles, and if you had a wet clutch, the clutch would be slipping like a banana peel.
Motul 7100 is JASO MA2, designed for motorcycles.

Dan

[moto-uno]

 ^ Just what Moto-Guzzi are we talking about with a wet clutch ? Any one else find this kinda irrelevant ? Peter

[Mr Revhead]

Step one: what is the rating specified for the engine?
Step two: match rating on bottle to engine rating, ensure its synthetic
Step three: pour it in.

Rating is not viscosity.
Motul is probably over priced. It certainly is here.
Motorcycle ratings have no meanings for Moto Guzzi, use normal car oil.

[DaveJT]

^ Just what Moto-Guzzi are we talking about with a wet clutch ? Any one else find this kinda irrelevant ? Peter

I agree. 10w-60 is good. What’s the zddp ?

[Bert Remington]

KR's V7 is a V7 III.  The service manual specifies: Engine oil 10W-60 / Synthetic based lubricant for high performance four-stroke engines / SAE 10W60; JASO MA, MA2; API SG

Depart from those specifications at your engine's risk.

EDIT: the Service Counter was correct: Motul 8100 is a car lubricant.




EDIT #2: I decided my post was a bit too cavalier so did more research on the JASO requirement.  It was developed for wet clutch designs where they shared oil with the engine.  Which the V7 III doesn't.  However, in order for a motor oil to meet any of the JASO MA, etc standards it must be at least of one of the following quality levels:

    API SG, SH, SJ, SL, SM
    ILSAC GF-1, GF-2, GF-3
    ACEA A1/B1, A3/B3, A3/B4, A5/B5, C2, C3

Furthermore, the motor oil's Dynamic Friction Characteristic Index (DFI), Static Friction Characteristic Index (SFI) and Stop Time Index (STI) should satisfy the JASO 904:2006 friction test.

Motul 8100 is ACEA A3/B4 and its API SN is backwards compatible with API SJ, SL,SM so except for the friction test it's JASO compliant.  And its backwards-compatible SN should be close enough to MG's SG.

My conclusion, like yours, is Motul's 8100 with X-Power is an excellent engine lubricant meeting MG's requirements.  Pour it in.

[tris]

Go here,  https://www.opieoils.co.uk/

They carry 7100 and 8100 with some tech specsp

[LowRyter]

8100?  Alrighty then. 

[Kiwi_Roy]

Well for what's it's worth I used Motul 8100 synthetic on my last oil change for my 2018 Eldorado . Smooth ,
easy starting , quiet , no change of any type from using the more expensive red lube . Heck it's got Ferrari v-12
on the list of recommended users :) . Peter

I think I must have done the same, not intentionally though, I figured 10W60 it must be the stuff.
This time I hunted down some 7100, just need to pick up a filter, I didn't change that last time.
It would be interesting to know why 8100 is not for motorbikes, perhaps just not good for wet clutches eh?
If it's good enough for Peter's Ferrari V-12

[moto-uno]

  Roy , I only wish it was my Ferrari V-12 ! I was referring to the  info on the back of the container of the 8100 Motul .
The red Motul is terribly pricey here , well over $80 ( with tax ) for a mere 4 liters ! Peter

[redhawk47]

^ Just what Moto-Guzzi are we talking about with a wet clutch ? Any one else find this kinda irrelevant ? Peter

Relevance: Many Moto Guzzi owners also own other brands of motorcycles, many of those have wet clutches. Caveat emptor!

Dan

[chrisfer]

On talking to the counter jockey I was told the 8100 is for cars, 7100 for motorbikes but He couldn't tell me why, 7100 is Ester based but I don't know what the 8100 is based on.

7100 is ester based this is better than 8100.
Motul 300V is ester based, but there is no 10W60.

[moto-uno]

Relevance: Many Moto Guzzi owners also own other brands of motorcycles, many of those have wet clutches. Caveat emptor!

Dan

 You do know that this is a Moto-Guzzi based forum  . Peter
(and yes I've owned outboards ,lawnmowers , etc )