Mixing Motul 300V with 8100 Xcess

[xYz999]

Hey guys, I am thinking about mixing 300V 5w40 (or 10w40) with Xcess 5w40 in 50-50 or 60-40 proportion for my 130k rb26dett engine. My car is gonna see some some track days / time attack this year. 300V being a racing oil (with detergents) is good for high stress application whereas 8100 Xcess is an excellent synthetic oil for street performance car, and that one cost twice as much as the other. So by mixing the two I can keep the cost down while still use a relatively short OCI (1000km – 1500km).

My concern is, though it is generally not a good idea to mix oils, but in my case, is it OK to mix these two motuls, ie no bizarre chemical reactions, no nasty surprises?

 

[Lead Shoes]

It should be ok, as long as the zinc levels in 300v are not down right poison to an engine if left in for more than a few days, I would mix away.

Pics of the r32-r34 skyline please

 

[ARCOgraphite]

Motul typ gives mixing advice - IIRC its only with oils within the line for grade fine tuning. Given the 300v is diester base and the 8100 is ??? I would not mix unless I contacted Motul. Some 8100 are PAO and some real synthetic blends. Brenden, can you expand on why it would be OK to mix?

 

[xYz999]

Originally Posted By: Brenden
It should be ok, as long as the zinc levels in 300v are not down right poison to an engine if left in for more than a few days, I would mix away.

Pics of the r32-r34 skyline please

I cant find info on zinc level in 300V anywhere. Apparently I was gonna run 300V only and daily the car for a few weeks before change out the oil for next event. IIRC there are detergents in 300V so it should be ok to run it on the street right?

Originally Posted By: ARCOgraphite
Motul typ gives mixing advice - IIRC its only with oils within the line for grade fine tuning. Given the 300v is diester base and the 8100 is ??? I would not mix unless I contacted Motul. Some 8100 are PAO and some real synthetic blends. Brenden, can you expand on why it would be OK to mix?


Correct me if i am wrong, 8100 xcess is group 4 based and 300V is group 5. According to the below links from UK motul site, it is ok to mix with other mineral or syn oils.

http://www.motul-oil.co.uk/pdfs/300v-engine-oil/300V_Power_5W40_TDS_(GB).pdf
http://www.motul-oil.co.uk/pdfs/synthetic-engine-oil/8100_X-cess_5W-40_(GB).pdf

I guess what am i trying to find out is if there is anyone out there who has already done that to share their "disastrous" experience (if there is any)

 

[dailydriver]

I cannot see the 300v being any higher in ZDDP content than the CRAZY levels in M1 Racing, or Redline's straight weight racing oils.

On their spec sheets Motul does not say one cannot use it in a street car, albeit it does not have any API approvals, if that means anything.

 

[boxcartommie22]

motul 300v can be used in street vehicles...300v has a full package..awsome oil!!

 

[dailydriver]

^^Yes, and the various 300V TBNs are soooo high, I am suprised they can call it a "race oil" at all!!

 

[dailydriver]

The Motul 300V spec sheets claim that it CAN be mixed with any other oils with no undue consequences (ONLY the made for NISMO, 0w30 Competition oil spec sheet clearly states DO NOT mix with ANY other oils

).

BUT, when I spoke to Motul tech today (not Joey, he is at the Long Beach GP for the weekend), they of course claimed that they do not recommend mixing their 300V with any other oils (even ones with similar makeup, like the Red Line I intend to mix it with

), due to base stock and/or add pack clash.

Now I do not know WHO to believe!!!

I am going to call and ask to speak to Joey next week, since he may be the ONLY one there who knows of which he speaks.

P.S.; The one bit of GOOD news was that they intend to release a 300V 0W-40 by the end of this year, or early next year.

 

[bluesubie]

IMO, you'll be able to run whatever blend much longer than 1-1,500 km's. You can always just buy an oil pump and take samples without draining the oil. Here's a used oil analysis on 300V from an S4.

-Dennis

 

[xYz999]

Originally Posted By: dailydriver
The Motul 300V spec sheets claim that it CAN be mixed with any other oils with no undue consequences (ONLY the made for NISMO, 0w30 Competition oil spec sheet clearly states DO NOT mix with ANY other oils

).

BUT, when I spoke to Motul tech today (not Joey, he is at the Long Beach GP for the weekend), they of course claimed that they do not recommend mixing their 300V with any other oils (even ones with similar makeup, like the Red Line I intend to mix it with

), due to base stock and/or add pack clash.

Now I do not know WHO to believe!!!

I am going to call and ask to speak to Joey next week, since he may be the ONLY one there who knows of which he speaks.

P.S.; The one bit of GOOD news was that they intend to release a 300V 0W-40 by the end of this year, or early next year.

I look forward for an update

 

[xYz999]

Originally Posted By: bluesubie
IMO, you'll be able to run whatever blend much longer than 1-1,500 km's. You can always just buy an oil pump and take samples without draining the oil. Here's a used oil analysis on 300V from an S4.

-Dennis


Thanks for the used oil analysis. Despite the vastly different engines, it's still a good reference.

1500km/12 track hours imo is a reasonable interval.

 

[dailydriver]

^^^Motul does suggest a VERY short OCI (3K kilometers) for that Nismo Competition 0W-30, I'm guessing due to it's very low TBN (6.8), as compared to all of the other 300V weights/formulae which are in the high 9 to low 12 range.

 

[Leo]

300V is an oil I would call a 'race ready street oil' - much like Redline. I wouldn't mix it, just use the 300V as intended. I've used it for years with excellent results. I've only ever seen excellent used oil analysis with it.

 

[dailydriver]

Originally Posted By: Leo
300V is an oil I would call a 'race ready street oil' - much like Redline. I wouldn't mix it, just use the 300V as intended. I've used it for years with excellent results. I've only ever seen excellent used oil analysis with it.


You would not mix it with other brand oils (or other series within the Motul product line), or you would not even mix it with other 300V weights??

Depending on what the specs are of the 300V 0W-40 when it is released, mixing that with their High RPM 0W-20 300v would probably be the ideal; cSt @ 100*, HTHS, VI, TBN, etc. for my engine.