Whats your choice? Fuel, Oil & Ratio

[brent j]

In my Suzuki TM125 I run BP Ultimate with Shell racing M oil. The oil pump is doing the "oiling" and I pull the pipe off every so often and have a look in the cylinder. So far I'm impressed with the lack of wear and the cleanliness.

In the 70's I ran my TM 125 for nearly two years on Shell super two stroke and it never even had a set of rings replaced, never missed a beat either.
The current TM smokes a little but starts easily and is quite happy idling for 10 minutes at a time.

Brent

[090]

Caltex first choice, BP second.
TTS as well 25:1

[Power Stand]

Well after reading that I should up the cc of oil, being a product of the 80ies and following oil manufacture recommendations and not having any problems (while using BelRay) in 10 years of racing, you are only as good as the next punter.

Only a fool lives in denial so up the CC I will. OK let me rephrase that, ignorance doesn’t mean you are stupid, it means you are not aware. Stupid is knowing but not doing something about it.   

Welcome to the 20 to 1 club! your bikes will love you for it.

Well the mind still boggles, ,,,,,,,,,,,,,,now, do I run the lower viscosity oils (like current oil I am using Belray Si-7) at 20:1 or switch back to MC1 that runs OK at 32~50:1 or best at 40:1.

Now it’s been defined I guess it’s a question of Low or High viscosity oils.

Whats better?

[Hoony]

run what works best for you in your experience over the years, it a personal preference thing i reckon.

How the 500 restore going, all finished? if so, where the latest pics mate  .

[Curly3]

A mate & I both bought new KX 250 A5's, he ran Belray synthetic and I used good old Castrol Super 2 Stroke.
Both did about the same work and we pulled them down at the same time, his was totally rooted ( chrome bore ) and mine was like new, until I grabbed the wrong fuel container at a meeting at Fairbirn Park, I was on the fly for a few laps.

[squirtmoto]

I used to sware by Valvolene 2stroke racing oil , used it up until it was as rare as rocking horse shit. All my mates used Castrol TT and I found that when we pulled them down, theirs was full of carbon build-up on the piston crown and head also the bottom end was dry. Mine had a light tann on the head and piston that could be wiped of with a rag and the bottom end had a film of oil coating everything.

When I couldn't find it anymore I switched to Castrol TTS syn, I always found that a half used bottle always smelt like Amonia, I spoke to a industrial chemist mate of mine who tested the oil for me and yes it had a hight concentration of Amonia , I guess that accounted for the failure of several bottom ends and pitting of main bearings caused by the acid of the Amonia.

I now use MOTUL 800 @ 40:1 with BP Ultimate, havn't had any drama's to date

[JohnnyO]

I'm the same as you Bill.. Motul 800 and BP ultimate at 40:1 and never had a failure.

[montynut]

Squirtmoto Ammonia is caustic not acidic. I use Caltex 98, Octane booster and TTS 25:1

[Stan S]

I quite like the old Rock Oil ad's. Not so sure about the oil.

[Lozza]

Actualy Stan that wasn't oil pouring out of the bottle in the ad, it was honey that was warmed up by the young lass rubbing the jar between her thighs.

[TT5 Matt]

we all like that ad she's got good points too

[Power Stand]

run what works best for you in your experience over the years, it a personal preference thing i reckon.

How the 500 restore going, all finished? if so, where the latest pics mate  .

Cheers Hoony, mate I posted a reply here, what about youself,,,,are you getting some ride time

http://ozvmx.com/community/index.php?topic=11939.0

[Lozza]

HERE is the latest reseach from Maxima.

[mx250]

HERE is the latest reseach from Maxima.

You're not 'stirring the possum', 'clouding the waters' are you Lozza? .

"Maxima Recommends: Oil/gas ratio must vary according to anticipated use:

    * Many lubricant producers recommend the same gas/oil ratio for all types of riding and racing. Maxima feels this approach is too general, and urges motorcycle owners to make their decisions based on the above research.
    * All of the above measurements are approximations, and should not be considered 100% accurate. They are meant to provide the browser with a basic understanding of two-cycle engine lubrication characteristics."

[ianscr250]

now if i new the mixes and settings for methanol i would run that  as we sell it in volume at work