rising gas going to 5w-20

[jorallo]

there was an oil forum posted couple pages back and they said that they were going to switch over to this oil because it will give better gas mileage what do you guys think?

[Mistabullet]

Go full synthetic?

[RICO8458]

at $3.25 per gallon here in my part of town, i will use any oil if it can lower my gas bill. lol.

[touringcamry]

^ get a funnel and PVC hose. Install the funnel on your seat and run the hose to the engine. The methane should burn and save you some gas maybe.

Although...that might be a bad idea because it could inspire people to do this:
http://www.Break.com/index/funnel_fart_turns_gross.html

Anyways...5W-20 that meet GF-4 requirements can be used on all AZ and MZ series engines so you should be good to go. If you have a 2AZ-FE that is 2006 or newer, you can use 0W-20 also.

Here is the TSB that toysrme posted:

[Yazovets]

What is up with this quest for gas mileage?

News-flash people! We all drive family sedans weighing 1500KG. No matter if you have the 4-banger or V6, good gas mileage CANNOT be achieved.

This is not the right kind of car to be trying to set records with gas mileage (except if you have the Hybrid one).

If you want a true platform for has savings without the hybrid costs, pick up a Yaris. That car can get amazing gas mileage without changing oils, having a light right foot, or any other silly tactic. The secret? Low weight.

[Squint]

The hybrid's fuel economy suffers when dealers change the oil and replace it with 10W30.

I only use 0W20 synthetic in mine.

[Super Kaioken]

so this is saying if you have a MZ engine that uses 5w-30. you SHOULD use 5w20 instead?

i have decent gas mileage but if there is improvement to be made.....then i am game!

[ScottFern]

Problem I have is I can't find 0w20 oil anywhere!

[Webb26]

Now how much of a difference is there between 5 wt 20 compared to 5w30? What about in the summer, especially out in areas that get a norm of 100 degrees. I would think the 5wt30 would be better in warm weather. BUt correct me if i'm wrong. I didn't read the post on the TSB, but why is it only cars 2006 and up?

[geoff5093]

Originally Posted by Webb26

Now how much of a difference is there between 5 wt 20 compared to 5w30? What about in the summer, especially out in areas that get a norm of 100 degrees. I would think the 5wt30 would be better in warm weather. BUt correct me if i'm wrong. I didn't read the post on the TSB, but why is it only cars 2006 and up?

I'd like to know the answer to your first question as well.

And they said it was because the way the older cars were designed, and 0w wouldnt be able to lubricate them as well.

[Webb26]

My car is not old, its an 04...but it doesn't fall under that category, but yet its still an az engine...

[07CamMeg]

Originally Posted by ScottFern

Problem I have is I can't find 0w20 oil anywhere!

Use the weight of oil specified in you manual, making sure it meets API and ILSAC spec noted.

Full synthetic after the break in period will help MPG slightly.

Wal Mart has a highly rated "house brand" full synthetic that comes in 5 qt. jugs - Super Tech, $2.76/qt in 5 qt. jugs. I heard its made by CAM2.

They carry the name brands also, Penzoil Platinum full syth. @3.79/qt in 5 qt. jug.

Mobil 1 runs about $4.60/qt in 5 qt. jugs.

I'm going to use the Penz. Plat. in my 4 cyl. 07 Camry after break in, with a Puralator Pure One filter every 5K mi. per change (as per manual) after the engine breaks in.

Factory fill for my car was Toyota syth "blend".

[Squint]

Originally Posted by ScottFern

Problem I have is I can't find 0w20 oil anywhere!

I bought many bottles of 0W20 at Wal-Mart. There are also some online sources for Mobil 1 and Pennzoil.

[jorallo]

(walmart )wally world has 5w-20 0w-20 mobile 1 woohoo finally check it again because they use to not carry that stuff..

[marc780]

Going from 5-30 to 5-20 will not make any difference in mpg. Youd do better to remove the spare from your trunk to save the weight, if you want to go that nit picking route. Personally i use only what grade Toyota says for temperature, if toyota says its ok then try it if you want. Personally im not willing to play amateur lubrication engineer by using anything other than what Toyota says.