Help me choose a racing oil

[facility1]

Bel-Ray synthetic ester 4T,,,,10w- 50 highly regarded in racing.

 

[sunruh]

25 years of UOA's on this very subject and postings for 21 years...clearly for no reason

if

if only there was a way to ... search

so depressing

 

[userfriendly]

You don’t need to pay an exorbitant price for an exotic engine oil when Delo 400 SAE 40 will work just as well or better for $3.50 a quart.
And no, it won’t foam up like beer.

 

[sunruh]

tested Delo 400 15w40 ... and posted it (hard to remember all 92 of them i did)
just like all of the hdeo's...it did well...in a offroad race bike...in a race

 

[goblin]

Maxima. Whichever fits your engine.

Plus the last time I've dealt with dirt bikes Honda still had separate engine and transmission oils, whereas everybody else was doing wet clutch with shared engine/transmission oil. My guess is Beta will be the latter.

 

[TrialKid]

Hello fellow enthusiasts! Been a lurker for years and really appreciate members generosity in posting VOA/UOA'S. I've learned a lot from this site over the years and would like to lean on the knowledge of others here as well as give back where I can. When I do oil testing I will share it.

I'm looking for what some consider the best "racing" oil for a new dirt bike I just ordered (Beta 430). Stout HTHS, high levels of zddp, moly, etc. This bike has no emissions and a split case design so engine oil is separate from the clutch. Therefore I can use an oil with more friction modifiers than the typical JASO MA oils that I've used the past 30+ years.

The recommended oil is Liqui Moly offroad 10w-50 which has a kv of 124 and 18.5 at 40/100c. As recent as 2021 it was Motul 7100 10w-40 that is 86 and 13.2. No differences in the engines AFAIK.

I completely understand these oils or ones I have used in the past (t6 15w-40, castrol 4t) etc will be ok. I just believe without the JASO MA wet clutch restrictions I can do better. What say you?

I've been looking into oils such as...

Schaeffers 9001 5w-50
Redline 40wt, 50wt
Mobil 1 racing 0w-50
Mobil 1 15w50 (cheap, at walmart but not much higher zddp, moly)
Eneos 10w-50
Royal Purple XPR 5w-50
Amsoil dominator 10w-40, 15w-50
Driven, Penrite, etc

Preferably something I can buy locally or order from an auto parts store, amazon, etc. Also, drain intervals are 30hrs and I know some of these oils aren't meant for leaving in very long. 30hrs to me might be in 1 week or 7mo depending on the year. Mix of fast racing and slow trail riding.

I appreciate the help!View attachment 262637

Redline 40wt 50wt and the rest wt race oil from them I think they have 1200ppm moly
Don't know if the clutch will hold.
Also XPR from Royal Purple

Don't know if Elf lubricants produce on HTX series ones something that fit to your needs.

 

[FrequentlyCynical]

Hello fellow enthusiasts! Been a lurker for years and really appreciate members generosity in posting VOA/UOA'S. I've learned a lot from this site over the years and would like to lean on the knowledge of others here as well as give back where I can. When I do oil testing I will share it.

I'm looking for what some consider the best "racing" oil for a new dirt bike I just ordered (Beta 430). Stout HTHS, high levels of zddp, moly, etc. This bike has no emissions and a split case design so engine oil is separate from the clutch. Therefore I can use an oil with more friction modifiers than the typical JASO MA oils that I've used the past 30+ years.

The recommended oil is Liqui Moly offroad 10w-50 which has a kv of 124 and 18.5 at 40/100c. As recent as 2021 it was Motul 7100 10w-40 that is 86 and 13.2. No differences in the engines AFAIK.

I completely understand these oils or ones I have used in the past (t6 15w-40, castrol 4t) etc will be ok. I just believe without the JASO MA wet clutch restrictions I can do better. What say you?

I've been looking into oils such as...

Schaeffers 9001 5w-50
Redline 40wt, 50wt
Mobil 1 racing 0w-50
Mobil 1 15w50 (cheap, at walmart but not much higher zddp, moly)
Eneos 10w-50
Royal Purple XPR 5w-50
Amsoil dominator 10w-40, 15w-50
Driven, Penrite, etc

Preferably something I can buy locally or order from an auto parts store, amazon, etc. Also, drain intervals are 30hrs and I know some of these oils aren't meant for leaving in very long. 30hrs to me might be in 1 week or 7mo depending on the year. Mix of fast racing and slow trail riding.

I appreciate the help!View attachment 262637

My suggestion is Castrol R. YES, I am joking. But nothing smells better. I remember going to the 12 hours of Sebring in the mid 1960's. I bullshitted my way into getting press passes which allowed me and my friend to get into the pits with my car and a rented camper trailer and right next to the track access, no barrier fence, a shuttle to wave down and move to a new location. Fond memories. LOTS of beer cans accumulating outside of our camper.

This was when the tradition breaking Chaparral was racing. American (highly modified) pushrod Chevrolet V8 coupled to...a (highly modified) two speed Powerglide transmission! If memory serves, as old farts often say, it never placed high, but it did better than many conventional power trains. It certainly made people sit up and take notice. Here we are almost sixty years later and no manual transmission hot car car can perform as well as our multispeed, paddle shifted cars. Back to the future!

Anyway, one could tell when a car was using Castrol R a few seconds after it passed. An auto geek perfume.

 

[TobyU]

Many motorcycles share the engine oil with the clutch so oils marketed as motorcycle oil can't have high levels of moly/friction modifiers. No doubt good oils but just thinking I could find something that protects even better with this bikes engine oil being separate.

Those two you listed are on my list. The 20w50 valvoline I'm a little concerned about flow at lower temps with the 150 kv at 40°c.

The mobil 0w50 is matches the 40 and 100 kv well. HTHS is 3.9, I wonder how well that holds up?

VR-1 Racing comes in 10w30, SAE 30, SAE 40 and O'Reilly carries all of these in stock
I have never looked on the bottle for the MA spec as I have only used it in cars and lawn mowers.