Hypothetical question

[leonard_nemoy]

So if I have a quart of Castrol power 1 10w - 40 motorcycle oil with friction modifiers for the motorcycle clutch laying around and no use for it and my cruiser is getting pretty close to needing an oil change but before I change the oil I need to add a quart to top it off for a weekend camping trip.

Could I put the quart of motorcycle in the 80 series and run it for 500 miles before I change the oil? Or would the friction modifiers and other additives in the motorcycle oil cause some kind of damage or problem in the 80 series.

I am not going to do this but I am just curious?

I am hoping for answers with explanations based on logic, not replies like "why would you consider this" or "just use the oil that toyota recommends".

What damage or other detrimental effects could come from using a motorcycle oil in a 1fz?

 

[effjay80]

IDK but I do know guys that add a can of seafoam like that before oil changes.

 

[leonard_nemoy]

IDK but I do know guys that add a can of seafoam like that before oil changes.

Yeah, I also know a few mechanics who will add a cup or two of diesel fuel to the engine oil and run it for a bit before draining the oil.

 

[gummycarbs]

10w - 40 motorcycle oil with friction modifiers

*Without* friction modifiers.

It will be fine.

Incidentally, I have run regular Mobil 1 in various motorcycles for decades, and more recently She'll T6 synthetic. I'm not aware of any oil that begins with 10W or higher that actually contains friction modifiers. Chances are, the oil you're currently running in the 80 doesn't have friction modifiers, either.

 

[manofthewoods]

So if I have a quart of Castrol power 1 10w - 40 motorcycle oil with friction modifiers for the motorcycle clutch laying around and no use for it and my cruiser is getting pretty close to needing an oil change but before I change the oil I need to add a quart to top it off for a weekend camping trip.

Could I put the quart of motorcycle in the 80 series and run it for 500 miles before I change the oil? Or would the friction modifiers and other additives in the motorcycle oil cause some kind of damage or problem in the 80 series.

I am not going to do this but I am just curious?

I am hoping for answers with explanations based on logic, not replies like "why would you consider this" or "just use the oil that toyota recommends".

What damage or other detrimental effects could come from using a motorcycle oil in a 1fz?

My (since sold) KTM RC8R, used 10w-50, also w/o friction modifiers for the wet clutch. Given the comparative light demands of a 1fz-fe vs a 1,200 cc 180 hp V twin...
I think you're beloved 1fz-fe will love you even more!

 

[bhsdriller]

send it

 

[Heckraiser]

There are different types of "friction modifiers": Zinc ZDDP, sulfphur, boron, phosphorous, organic, etc, most contain some mix of them, and depending on the oil type and brand, the modifier may be more of a marketing gimmick than an actual oil additive.

But I seriously doubt anything they put in bike oil is going to harm a 1fz in a limited timeframe and diluted. Given the wide range of recommendations on oil type, weight, additives, "mechanic tricks," and snake oil these engines have shrugged off, I wouldn't be concerned in the slightest.

 

[gummycarbs]

But I seriously doubt anything they put in bike oil is going to harm a 1fz

Other way around. Is anything *missing* in motorcycle oil that an 80 needs? The answer is no.

If you were asking about a 2020 Honda Fit, then the answer would be "maybe".

 

[leonard_nemoy]

My (since sold) KTM RC8R, used 10w-50, also w/o friction modifiers for the wet clutch. Given the comparative light demands of a 1fz-fe vs a 1,200 cc 180 hp V twin...
I think you're beloved 1fz-fe will love you even more!

Huh, I thought all motorcycles needed friction modifiers due to the wet clutch design motorcycles use.

This is the oil I have sitting around my garage....

4 CYCLE ENGINE OILS | WELCOME | CASTROL USA

Four-stroke motorcycle engines work harder than four-stroke car engines. So our 4-stroke engine oil is liquid engineered to meet their extreme demands.

www.castrol.com

Maybe if I am feeling brave I will use it to top off the cruiser....... but probably not lol. Although I do bet it wouldn't hurt a thing.

 

[gummycarbs]

I thought all motorcycles needed friction modifiers due to the wet clutch design motorcycles use.

Exactly the opposite. Friction modifiers would ruin a wet clutch.

By the technical definition of "friction modifiers", I'm sure "motorcycle" oils contain some, like zinc. But it won't contain the modern, much more significant friction modifiers found in Energy Conserving oils. Those are the very low viscosity oils that allow manufacturers to hit their EPA-mandated targets.

Maybe if I am feeling brave I will use it to top off the cruiser

The only reason not to is that it's overpriced and going to waste in the 80.

 

[landtank]

I’d put adding some motorcycle oil to my 1fz-fe on par with picking up a dud firecracker.

 

[manofthewoods]

Huh, I thought all motorcycles needed friction modifiers due to the wet clutch design motorcycles use.

This is the oil I have sitting around my garage....

4 CYCLE ENGINE OILS | WELCOME | CASTROL USA

Four-stroke motorcycle engines work harder than four-stroke car engines. So our 4-stroke engine oil is liquid engineered to meet their extreme demands.

www.castrol.com

Maybe if I am feeling brave I will use it to top off the cruiser....... but probably not lol. Although I do bet it wouldn't hurt a thing.

I've owned dozens of motorcycles, it used to be that in some motorcycles gearbox/clutch ran in it's own lubricant not unlike grease; not at all suitable for running in a crankcase. By necessity all 2-stroke motorcycles utilize this system, but even some 4 strokes ran separate crankcase and gearbox/clutch lubrication systems. For simplicity, I suppose, engineers decided to combine crankcase and gearbox/clutch lubrication systems. My KTM generated so much horsepower that the wet clutch would slip if the oil had friction modifiers.

Assuming the viscosity is reasonable for current conditions, 1 quart/liter in a 1fz-fe oil pan is a proverbial drop in the bucket.

 

[Kernal]

If this is the oil the OP is refering to, looks to meet API SL specs:

CASTROL® POWER 1 - FULL SYNTHETIC 4-STROKE MOTORCYCLE ENGINE OIL | WELCOME | CASTROL USA

Proven to deliver superior power and acceleration at the touch of the throttle. Learn how this motorcycle oil provides maximum acceleration for bike riders.

www.castrol.com

FWIW: years back I was cleaning out my garage and found 6-8 bottles of various brands and weights of engine oil (none of it synthetic), all at least 10 years old. I drained out the old oil, slapped on a new oil filter, poured in the mixed stew of oil, and drove it.

Within one mile my engine exploded and I was killed, that was 12 years ago.

 

[BILT4ME]

If this is the oil the OP is refering to, looks to meet API SL specs:

CASTROL® POWER 1 - FULL SYNTHETIC 4-STROKE MOTORCYCLE ENGINE OIL | WELCOME | CASTROL USA

Proven to deliver superior power and acceleration at the touch of the throttle. Learn how this motorcycle oil provides maximum acceleration for bike riders.

www.castrol.com

FWIW: years back I was cleaning out my garage and found 6-8 bottles of various brands and weights of engine oil (none of it synthetic), all at least 10 years old. I drained out the old oil, slapped on a new oil filter, poured in the mixed stew of oil, and drove it.

Within one mile my engine exploded and I was killed, that was 12 years ago.

But....... What about the busload of Nuns and kindergartners?

 

[leonard_nemoy]

If this is the oil the OP is refering to, looks to meet API SL specs:

CASTROL® POWER 1 - FULL SYNTHETIC 4-STROKE MOTORCYCLE ENGINE OIL | WELCOME | CASTROL USA

Proven to deliver superior power and acceleration at the touch of the throttle. Learn how this motorcycle oil provides maximum acceleration for bike riders.

www.castrol.com

FWIW: years back I was cleaning out my garage and found 6-8 bottles of various brands and weights of engine oil (none of it synthetic), all at least 10 years old. I drained out the old oil, slapped on a new oil filter, poured in the mixed stew of oil, and drove it.

Within one mile my engine exploded and I was killed, that was 12 years ago.

Yep, that's the oil. One things for sure, it's too damn expensive for the Toyota. But if I ever sell the bike and have some leftover oil......

I just changed the oil on the new motorcycle and went with the 10w-50 because that is what the triumph factory service manual called for during the summer temps. Come October I will switch to a 10w-40. That's what really got me thinking..... if I drain the oil from the motorcycle at 1,0000 miles could I put it in my toyota as a top off.......

But honestly I am not that cheap and I don't care that much about the environment.

My other thought was...what am I going to do when Biden sells the last of our oil to China. Haha jk lol

Now this thread will probably get deleted because of my Biden joke.