Oil..

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I agree it holds up well, been using it on other vehicles for a few years now, get good gas mileage, but I'd rather more frequent oil changes with the other oil.
All auto makers used to give you more leeway, we used to have more choices including Toyota but now they've stopped.
And that's my main gripe, I want to know if it's just all B/S or if there's any factual evidence. We need the oil industry to chime in maybe?

 

I'm thinking the oil they want may also have to do with the cam driven high pressure fuel pump, as there have been reports of noise and failures attributed to lack of oil changes and non synthetic may not last as some ppl would probably not change it often enough.
But no solid guidance or reason from the makers given yet.

 

The tighter clearances need thinner oil to fit between the parts. Thicker oil may not provide the lubrication.

 

Yes is probably is buried in the manual just like the Corolla but it doesn't say anything about just changing from the recommended viscosity for ever and ever. It says it is allowable if the recommended oil is not available but at the next oil change it should be replaced with the recommended viscosity oil

 

That's the purpose of the cooling system, a vehicle in alaska and one in arizona will operate near the same temperature.

 

0w20 is due to longer intervals. Most of the 2GR's switched to 0W20 with no internal changes, it was to meet emission standards.

That said, 0w20 is superior to 5W20 in every way, especially in Canada. I have no hesitation to run 0w20 all the time.

I would run 0w40 if I lived in Arizona, but thats me, I would still bill it out as 0w20

 

Ahhh, so you would think...

True story. My dad bought a 1968 Plymouth Satellite with the slant 6 and the torqueflight transmission brand new in 1968. Sometime around 1985 the speedometer/odometer broke at 558,000 miles and he drove it until the frame rusted through in 1995. Probably put another 250,000 miles on it. Then he put it up on blocks in front of his house, and a year later someone stole it. For all we know it's still driving around...

 

Not sure that it's related, but I do know that Dodge Ram had a VVT system and multi-displacement system ran off the oil in the 5,7L and 6.4L and that people who decided to run thicker than the recommended 0w20 were having problems with both systems. So there may be more too it than just Café standards, particularly with VVT designs.

 

That must of been the one I seen Mis-fits Garage rebuilding on t.v..

 

Lately, I'm thinking the cam driven high fuel pressure pump failures that have been attributed to lubrication too. But they used to tell you reasons for the recommendations, but I haven't been able to find any by either the autos or oil lubricant industry.

Cheers!

 

DON'T do it... you've been warned.....

One reason and one reason only - the Timing Chain.... they stretch sometimes... happened to me in my ahem Honda. I was burning oil at a quart every other tank full, change the viscosity as suggested by my mech, about a month later... I was fucked.

 

No go diggy die.

 

I've al

Do you know if the Toyota pump uses a roller or plunger piece that contacts the cam lobe? If it is a roller design I wouldn't think that oil viscosity would be as critical to that part of the system, but I may be wrong.

 

It’s roller (see engine image) type I believe. And they appear to be concerned about the breakdown of regular oil and the build up of the sludge as it breaks down.





Also unlike synthetic oil which doesn’t breakdown at anywhere near that rate its a safer bet to protect that very expensive cam driven high pressure fuel pump. I would never anticipate that problem because I'm anal about maintenance lolo!

Hope that helps
Cheers!

 

I dont know how ANYONE can go 10k before changing the oil. I know I cant and just swapped mine out this weekend at 5000miles. ill let toyota do the next one at 10

 

A guy I worked with at Sperry when they were still in business ran the oil change frequency tests for the Navy's rotating radar domes. Those things that are always spinning on the ships and are about the size of a car, and run 24/7/365. He had 5 of them in the parking lot and changed the oil in one, once a week. One he changed once a month, another every 2 months, another every 6 months, and one he never changed the oil. The one he never changed quit after 2 years. All the others had varying degrees of wear except the once a week one... Not very interesting except that he also had an old mother who lived 750 miles round trip from him and he would visit and take care of her every weekend. So he bought a Honda and changed the oil every 1000 miles. I met him when he was on his 2nd Honda. The first one did 650,000 miles with no major engine issues. He was at 350,000 or so on his 2nd one. This was back before synthetics.

But the point was, it wasn't the oil breaking down, it was the contaminants, condensation, and dirt that caused the wear in the radars and even more so in the engines. I personally always changed my oil and filter at 3,000 miles and have never had any major engine issues. I may be going to a 5,000 mile interval now.

FWIW, I just changed the oil and filter in the new Tacoma at 500 miles and it was dark brown. The new stuff was clear yellow. I think I'll do it again at 3,000 and see where it's at. I'm using Mobil 1 and Pennzoil Platinum+ 0w20.

 

I'm with you, I'm running around 6k on the wife Corolla but instead of letting them do the oil changes I tell to just lay the filter on the seat I'll take care of it. I started with the first oil change putting Castrol Magnatec and that's all it will get until I get rid of it. I know they put 0W20 in but what type. Never had any problems with any of the turbo motors that I've driven running nothing but Castrol synthetic

 

Yea everyone says ohh

$98 toyota 0w20 toyota case of 12 quarts full synthetic 0W-20 oil

toyota 0w20 is good..that may be with stuff in the bottle. But who knows what they are actually using in the dealer with the oil they bought from the lowest bidder to supply them oil.