661 Oil Test 32:1 vs 40:1 vs 50:1 ?

[bwalker]

Most boiling points are 400+ . The con rod bearing has the best chance of getting to that tempature. But it's awfully difficult to find the temperature of internals. Blued con rods aren't uncommon.

Blued con rods are typically caused by lack of lube, at least on thr big end. I would think the big end rod bearing temp would be around half of 400, although I can't say for certain.

 

[CR500]

My 800 went 7500 miles before I sold it and the crappy laminate moly filled rings. I was running Citgo Sea and Snow at the equivalent of 20:1. Never fouled a single plug and the Rave valves looked good when inspected yearly.

How many times did you have to add ISO to the crank bearings or was that a myth?

 

[cuttinties]

Blued controls are typically caused by lack of lube and I would think the big end rod bearing temp would be around half of 400, although I can't say for certain.

That's the thing is none of us have the means to really confirm the true operating temperatures of the big end bearing.

 

[bwalker]

How many times did you have to add ISO to the crank bearings or was that a myth?

Cranks bearings still had the factory is flex in them. Never worried about it.
And I should add I absolutely flogged that sled. Lots of our trails are on old rail lines so you can cruise at 90+mph. Also did a fair amount of deep powder riding, which is taxing.

 

[bwalker]

That's the thing is none of us have the means to really confirm the true operating temperatures of the big end bearing.

You could hit the crank case with a temp gun and get a good idea.
Somethings you just have to accept you won't ever know definativly. And in this case it really doesn't matter much. Lower end failures are mostly caused by dirt ingestion and or lack of lube. Run clean filters and make sure they fit up tight, plus run a decent amount of oil and you don't have to worry about your lower end.

 

[cuttinties]

You could hit the crank case with a temp gun and get a good idea.
Somethings you just have to accept you won't ever know definativly. And in this case it really doesn't matter much. Lower end failures are mostly caused by dirt ingestion and or lack of lube. Run clean filters and make sure they fit up tight, plus run a decent amount of oil and you don't have to worry about your lower end.

I run 32:1 and I'm extremely picky about my air filters. But if you've seen some of my customers shet you'd be amazed.

 

[bwalker]

I run 32:1 and I'm extremely picky about my air filters. But if you've seen some of my customers shet you'd be amazed.

I'm sure. Air filters are hugely important for a two stroke. Much more bang for your buck obsessing on air filters than oil.

 

[cuttinties]

I'm sure. Air filters are hugely important for a two stroke. Much more bang for your buck obsessing on air filters than oil.

Clean clean and clean. Sharp chain and good tune.

 

[Whitespider]

 

[johnny5ny]

Impressive! U have my respect!! Lol!!

Lol
This guy doesn't know the difference (or how to use) there, their, and they're. Your and you're? Nope.
I'm certain there's (<---see that bwalker?) more, but I cannot read this crap any more tonight.
BS degree alright. Wonder what unrelated field it's in.

 

[bwalker]

Lol
This guy doesn't know the difference (or how to use) there, their, and they're. Your and you're? Nope.
I'm certain there's (<---see that bwalker?) more, but I cannot read this crap any more tonight.
BS degree alright. Wonder what unrelated field it's in.

I am using a smart phone with a damn auto correct feature that is vexing at times. Please forgive me!

 

[KG441c]

Id like to hear about viscosities after the solvents and PIB boil off?

 

[bwalker]

Id like to hear about viscosities after the solvents and PIB boil off?

The PIB is present till the end as it is the component that prevents scuffing. Very high viscosity fluid.

 

[KG441c]

Ok so the base oils of lets compare R2 against 800t and r50. Are the viscosities the same? As far as the PIBs are concerned is this where the additional viscosities come from and wear advantages in the formulations from one oil to the next ?

 

[Deleted member 83629]

Maybe you guys can try this i have used all three before i was on AS with good results the pennzoil smelled better than the rest.

 

[KG441c]

I think most will do a sufficient job but have seen alot of equipment I work on for customers from chainsaws to weedeaters and blowers. Ive seen some wear on equipment ran at 50to1 with certain oils. May be in the tune or the incorrect mix though? Ouaker State 2t , some no name brands, and really dont care for Stihl Ultra but thats just my opinion

 

[bwalker]

Ok so the base oils of lets compare R2 against 800t and r50. Are the viscosities the same? As far as the PIBs are concerned is this where the additional viscosities come from and wear advantages in the formulations from one oil to the next ?

Can't really answer any of that without a whole lot of speculation.

 

[bwalker]

Ok so the base oils of lets compare R2 against 800t and r50. Are the viscosities the same? As far as the PIBs are concerned is this where the additional viscosities come from and wear advantages in the formulations from one oil to the next ?

Can't really answer any of that without a whole lot of speculation.

Maybe you guys can try this i have used all three before i was on AS with good results the pennzoil smelled better than the rest.
View attachment 425101

View attachment 425100

View attachment 425102

The valvoline product is a boat motor oil and shouldn't be ran in air cooled equipment

 

[Trx250r180]

Maxima k2 and Maxima super M ,is there a whole lot of difference ? Both have real similar descriptions on the website .

 

[blsnelling]

Maxima k2 and Maxima super M ,is there a whole lot of difference ? Both have real similar descriptions on the website .

K2 is a full synthetic, Super M is a synthetic blend.