Oil Change

[strat61caster]

Originally Posted by tennisfreak

One argument for doing oil change more often could be that we have Direct Injection engines and to help reduce build up on the intake valves changing the oil at 3000 mile intervals is said to help.

source: http://www.aa1car.com/library/intake...di_engines.htm

As already mentioned the FA20 uses Toyota's D4-S injection system which utilizes both direct and port fuel injection, the valves receive regular baths of gasoline/petrol to clean gunk off.

Toyota's first D4 direct injection system was implemented in 1998, D4-S as we know it was on dealership floors in 2005, if there were long term issues someone would have brought it up by now.

[ame="http://en.wikipedia.org/wiki/Toyota_GR_engine"]Toyota GR engine - Wikipedia, the free encyclopedia[/ame]
[ame="http://en.wikipedia.org/wiki/Toyota_UR_engine"]Toyota UR engine - Wikipedia, the free encyclopedia[/ame]

Motor oil should never interact with the intake charge flowing over the valves carrying waste exhaust gases which cause carbon buildup.

I suppose the argument could be made that frequent oil changes could reduce piston ring wear which contributes to oil entering the combustion chamber and burning and being recirculated and deposited as carbon buildup on the valves, but that's the point of the oil analysis, to prove that the oil still has an acceptable amount of lubricating properties as the miles pile on. That line of thinking has nothing to do with the injection system implemented, it applies to carbureted engines as well.

Interestingly Mazda's solution to carbon buildup on their SkyActiv system is to increase the temperature of the valve itself, if it's hot the carbon either doesn't stick or just burns away. We will see in a few years, especially with the new Miata carrying the technology.

I'm struggling to find an official source but this article gets brought up a few times and seems legit, I could have sworn there was an official press release mentioning it about the most recent generation of skyactiv but I'm coming up blank.

http://www.motoiq.com/MagazineArticl...echnology.aspx

In any case, this post will soon be automotive urban legend that direct injection engines benefit from the old Italian Tune-Up:

http://www.vwgticlub.co.za/forum/vie...=5859&start=20

[projek_01]

Please educate me on where crude oil comes from. I am not a geologist but maybe you are?

From my understanding, crude oil comes from any organism buried under the right conditions. Most of our oil would come from oceanic organisms like algae and plants so you are right that it isn't exactly "dino" oil. I don't see anything wrong with calling it dino oil though. Many gear heads call it that.

Originally Posted by stugray

I find it funny that most people still think Crude Oil came from dinosaurs or decayed plant matter.....

"Dino Oil" LOL......

[billyk]

While this thread has been entertaining at points, the topic has been so well covered on this forum it's amazing it still generates such debate.

Check my post here, scroll down to #298. The oil Blackstone Reports clearly indicate that's there's no risk of keeping that initial fill in the engine for 7.5k, or for 10k+ for that matter.

If you are more comfortable changing it sooner, that's awesome, you should do just that. But it might not be productive to come back here to argue why it needs to be changed sooner than the standard interval.

[stugray]

Originally Posted by projek_01

Please educate me on where crude oil comes from. I am not a geologist but maybe you are?

From my understanding, crude oil comes from any organism buried under the right conditions. Most of our oil would come from oceanic organisms like algae and plants so you are right that it isn't exactly "dino" oil. I don't see anything wrong with calling it dino oil though. Many gear heads call it that.

The crude oil we get out of the ground did not all get here from decomposing animal & vegetable proteins. It was primordial ooze that was plentiful on this planet long before there was life.

If hydrocarbon deposits "i.e. petroleum" is only a result of biological processes, where did the oceans of ethane & methane on Saturn's moon titan come from? Dinosaurs?

This simple fact has made planetary scientists rethink the origin of "fossil fuels" on the primordial Earth if we have found other worlds with rivers of the stuff in a place that life is not even possible, much less abundant.

[extrashaky]

Originally Posted by stugray

I find it funny that most people still think Crude Oil came from dinosaurs or decayed plant matter.....

"Dino Oil" LOL......

It's just a saying. Get over yourself.

[projek_01]

let's see here.. ethane, methane, one and two carbon chains long. Not the same as asphaltInes and paraffin which are hundreds of carbon chains long.

How did the levels of CO2 drop though the evolution of earth? It just floated away? no, organisms died and brought the carbon with them to become fossil fuel. Is it a coincidence that fossil fuels contain molecules similar to chlorophyll or heme groups.

Sorry to derail this thread, I couldn't stand being called out. I will no longer participate this this discussion.

Originally Posted by stugray

The crude oil we get out of the ground did not all get here from decomposing animal & vegetable proteins. It was primordial ooze that was plentiful on this planet long before there was life.

If hydrocarbon deposits "i.e. petroleum" is only a result of biological processes, where did the oceans of ethane & methane on Saturn's moon titan come from? Dinosaurs?

This simple fact has made planetary scientists rethink the origin of "fossil fuels" on the primordial Earth if we have found other worlds with rivers of the stuff in a place that life is not even possible, much less abundant.

[strat61caster]

Originally Posted by stugray

This simple fact has made planetary scientists rethink the origin of "fossil fuels" on the primordial Earth if we have found other worlds with rivers of the stuff in a place that life is not even possible, much less abundant.

If you hadn't mentioned primordial ooze I would have bet you would have followed this paragraph up with a young earth hypothesis.

[Tcoat]

Oil is from living matter, yes. Dinosaurs specifically, not so much.
Stu is also right but that is a very small portion of the oil around.


http://www.livescience.com/9404-myst...upply-oil.html

[stugray]

Originally Posted by projek_01

let's see here.. ethane, methane, one and two carbon chains long. Not the same as asphaltInes and paraffin which are hundreds of carbon chains long.

How did the levels of CO2 drop though the evolution of earth? It just floated away? no, organisms died and brought the carbon with them to become fossil fuel. Is it a coincidence that fossil fuels contain molecules similar to chlorophyll or heme groups.

Sorry to derail this thread, I couldn't stand being called out. I will no longer participate this this discussion.

So that is "calling you out?" You must be fun at parties.

Originally Posted by Tcoat

Oil is from living matter, yes. Dinosaurs specifically, not so much.
Stu is also right but that is a very small portion of the oil around.


http://www.livescience.com/9404-myst...upply-oil.html

So we are all in agreement. There were Dinosaurs on the moon Titan.
We have found complex organic molecules in interstellar space.
We have also found them raining down on the earth from Outside of our atmosphere.

Oil comes first, then life. Not the other way around.

[2016 Camaro SS]

I put a Fumoto valve on mine after the dealership free oil went away and used ENEOS Sustina 0w-20 at 20k.

Car blew up.

Experience was great. I roasted marshmellows.

[Tcoat]

Originally Posted by stugray

So that is "calling you out?" You must be fun at parties.



So we are all in agreement. There were Dinosaurs on the moon Titan.
We have found complex organic molecules in interstellar space.
We have also found them raining down on the earth from Outside of our atmosphere.

Oil comes first, then life. Not the other way around.

There are several theories about where oil came from and as I attempted to point out some permit for at least a couple of sources occurring in conjunction. Don't think that is unreasonable really.
Yes there is proof that at least one type of oil predates any life (which explains the extraterrestrial compounds) but that does not exclude the other theories of organically created oil.
The whole "dinosaurs turned into oil" things goes way back in history and is firmly implanted into common lore so will never truly be rebuked. The reality of course is that many different organic materials turned to oil with dinosaurs being a minute portion of that.

[cycleboy]

Is it not slightly possible that simple carbon-based compounds on other worlds came to be from a different path than the same compound on Earth?

[Koa]

stu for fuckin president 2016

[stugray]

/hijack

http://www.ft86club.com/forums/showthread.php?t=89123