Featured Hybrids Hard On Engines

Lol.... Classic @Trollbait question. When it comes to Gen3 they didn't add coolant loops to the exhaust system and other systems because they wanted to make the engine run colder.

Only thing he has to say is you need to buy the oil he's selling... it's the $ole reason he made this cluele$$ and highly di$hone$t video!!!

 

Lol... This is hilarious... I'm gonna start buying 0W-8 motor oil from now on simply because I prefer the number eight! Because "motor oil is motor oil."

 

But is that oil really even that different? Sounds like salesmanship, not a statistically valid difference maker.

 

#1
Did anyone formulating this latest & greatest blend of engine oil (or ANY oil blend for that matter - old or new) take into consideration the pollution & toxicity of oils that get burned in the combustion process?
or -
is it just part & parcel with the whole environmental & health destructive fossil fuel burning process.
#2
Almost a full ¾ of car buyers are purchasing something used, not new anyway. That being the case you don't really know what kind of blend was used for that first, 12k, 40k, 60k miles. So go ahead and switch over if you really think it's going to make that big of a difference longevity versus price - when very very few people run a car until the wheels fall off anyway.
Conclusion?
The "best" oil is no oil at all. Rather than get all OCD over a hybrid electric stop start's harm, or lack thereof, get an ev & then you won't have to worry about your oil or the environment getting worse - from your decision on what kind of oil might mitigate theoretical problems.

 

That isn't heat storage. The exhaust system is going to cool off once the engine isn't running; it's the cat that holds heat the longest. Then I'm pretty sure Toyota stopped using it in the gen5.

Those coolant loops are for warming up the engine quicker for emissions. The Subaru has an oil temperature gauge. When the engine is warm enough for closed loop operation, the oil still has about 100 degrees F to go before reaching its warm operation state.

 

I'm sure Mobile 1 has tweaked the additive packages a bit for engines that start and stop more often than regular ICE engines, but I doubt it's anything seriously different.

I'd be interested in seeing what the "Motor Oil Geek" finds on an oil analysis compared to the other "flavors" of Mobile 1.

My big takeaway from this video is that the Prius programming obviously doesn't allow the engine to shut off shortly after it has started up for the first time in the morning - negating just about everything the video says in the title. (I say obviously because I don't have access to the code, just the cars. My Gen 3 wouldn't shut off the engine until I got halfway to work in the morning, even though my trip was mostly downhill. With a warmed-up car, this trip could almost be made entirely under battery power. My Gen 4 Prime won't go back to EV mode until the engine is warmed up too. It says it's in EV mode, but will continue running the engine if for some reason you take it out of EV mode when the engine isn't warmed up. I don't know about prior generations. I used to have a Gen 2, but that was the car my wife drove to work in the mornings. I also never drove a Gen 1.)

 

& yet an extremely short run cycle still can happen. Consider just running out of electricity, for just a couple seconds or ½ a minute prior to your destination shut down. It would be foolish to think with over 2 decades of start stop gas burners running around the landscape - that engineers of both oil & ICE haven't factored those variables into the equation.
.

 

The coolant thermos was a point of failure, added cost, and was not effective. They instead use exhaust heat recovery in gen 3 and above. This has the added advantage of being able to use cooled egr when the engine is warmed up. Exhaust heat recovery and cooled egr are being used more often in vehicles. Gen III and later do a low power warm up to reduce emissions. Electronic heating of the catalyst could reduce it further and is used by some manufacturers with less efficient engines.


The lower friction of the gen III and later engines and the synthetic motor oil means the wear of start up is not as great. Still every cold start hurts.

 

Yeah, that happens too. I'm not sure it happens. Not all the time though, to where it could "be really hard on engines", like the video says. Would it really be worth altering the programming to keep the ICE running after you've shut off the car? What if you park it in your garage? Do you want to keep the engine running then? How much programming would that take? Could you do it in a reliable enough manner? What would the liabilities be? The engine is going to be shut off for a while almost all of the time there too, so there's not much of an advantage to keeping it running only to let it cool off.

Maybe the engineers of both oil and ICE have considered these factors after all?

 

Toyota evidently went too far, at least with the low-friction piston rings (2010 to partway through 2014); they're prone to runaway oil consumption past 150k miles.

We got the block heater installed, eight-o'clock-day-one, try to use it for 2 hours before each cold-start. Hopefully helps.

 

From a parts diagram, it appears the gen5 did away with the exhaust heat recovery. With leaks developing in some gen4s, it is another point of failure. Of course, the gen3 didn't get the EHR in all markets, so a single diagram doesn't mean all gen5s don't have it.

From the little I've seen about the Hybrid oil, it is formulated to address higher levels of water and fuel that could end up in the oil. Something I'd be more concerned with in a PHEV, or any car doing really short trips.

 

We did see people complain about this on the boards last year, driving in cold winter weather here in Canada. Its why I make sure to switch to HV mode long before I get to 0% charge/EV range if I think I'll *barely* make it home. I don't want the engine on for only 2 or 3 minutes.

It's also why its good to do a hybrid mode drive every so often, to make sure you do give the engine enough time to heat up appropriately and boil off water every so often. If you do one gas drive a week, for 20 - 30 minutes, you're still saving a lot of gas, you're not letting gas go stale, and you're letting the engine lubricate. If you're in the middle of winter when it gets 20C or lower for weeks at a time, it is what it is.

 

Yes. Fugedabout Fuelly bragging rights, give your engine a little exercise.

^ Just editorial.

 

You can avoid engine starting up from Gen3 onward if you get an engine block heater that runs super hot.

 

Just as another data point:
Our PHEV uses the ICE to supply heat - so during the dead of winter the ICE engine starts and stops to warm up the coolant enough to supply heat to the cabin. It does this all winter long running for short times to supply heat then shutting off.

After 6 years and 65,000 miles of doing this - negative effects so far = nothing- no mechanical problems - smooth trouble free operation- all while running on cheap Super Tech 5W-20 that is changed out at 7500 miles.

I wonder if all this discussion is much ado about nothing.

Incidentally I like the ICE coming on to supply heat design - it works well supplying heat-exercises the engine - helps turn over the gas in the tank- keeps the engine ready to rock and roll if needed- and as a bonus the cold weather doesn't affect my range in all electric mode, the Hybrid Battery is not used to supply any heat the ICE running at low idle when needed does that.

 

Yes

 

its so normal for it to get below 20C I didn't even realize I forgot the minus

And, even with engine exercise fuelly bragging rights remain easy. I'm still below 1L/100km in effective fuel efficiency haha

 

I can do 1 liter per 100 km, after filling up at a particular gas station and resetting trip meter: roll out, onto a steady downhill that’s about 2 kilometres. Till the bottom anyway.

if you’re on a phone turn it landscape to see the bigger picture, my fuelly badge.

 

We need to go back to first principles:

• piston with three rings
• connecting rod with piston pin and crank shaft bearing
• intake, two valves, valve springs, valve caps, valve seats, and shaft sealing
• power draining exhaust stroke, intake stroke, compression stroke, and one power stroke
• exhaust,, two valves, valve springs, valve caps, valve seats, and shaft sealing
• spark plug, eroding electric contacts and coil
• fuel injector with built-in valve, piston core, and fuel connector

All of the above times 4 cylinders.

Common parts:

• two camshafts with gears and optional timing offset device
• one timing belt with 100 links or a toothed, rubberized belt
• crankshaft with bearings, toothed flywheel, and drive splines at both ends with seals
• engine block, cylinder head, oil pan, drain plug, oil filter, oil galleries, and oil pump with pressure valve
• electric starter motor
• air intake with temperature sensor and optional valve
• intake manifold
• fuel tank, filler tube, fuel cap, cover flap, filter, and fuel pump
• engine controller with air, oil, electrical, encoder, oxygen sensors and cables along with drive cables
• radiator, coolant, coolant pump, thermostat, and one or two radiator fans, shrouds, and inlet duct
• alternator with drive belt and pulleys
• exhaust manifold, catalytic converter, oxygen sensors, muffler, optional valve, and exhaust pipe

This violates "KISS" (Keep It Simple Stupid) in so many ways. But easily nearly 1000 parts including bolts and fasteners trying to keep the engine from throwing its parts in a BIG BANG. Things to do:

• Only oil coolant and lubrication with radiator also holding reserve oil
• Three cylinders in two-stroke cycle
• Top rotary valve exhaust cam
• Bottom air intake
• Combined fuel injection and ignitor, glow plug
• Dual alternator-starter and flywheel

Even the KISS engine wants to 'rapid disassemble itself.' But it would be a much smoother, simpler and run cooler engine. Of course, an EV throws even this one out.

Bob Wilson

 

Talking about saying the kind of stuff that the fossil fool companies don't want people saying... How is there industry going to keep growing?