5W20 Best for NC Summer on 2007 CE?

[Dean407]

In searching it seems 5w20 is the recommended oil.

Is that the case for the summer? It's been VERY hot here (around 90) lately and I expect the summer to be warmer than average.

I have 46k on my corolla.

[mikered30]

5W-30 or 5W-20 is fine, Pennzoil makes great oil.

[dgleason]

It is not printed on the oil cap? on my 03 it says 5W30.

[mikered30]

Originally Posted by dgleason

It is not printed on the oil cap? on my 03 it says 5W30.

The 06+ are back spec'd for 5W 20 per a toyota TSB. You have to use 5w30

[dgleason]

I did not see that tsb. thanks for the info.

[mikered30]

Originally Posted by dgleason

I did not see that tsb. thanks for the info.

No problem, the 06+ have a different dipstick so that makes for a larger sump.

http://www.chrysanindustries.com/pdf..._tsb071002.pdf

[islandboy57]

Originally Posted by mikered30

No problem, the 06+ have a different dipstick so that makes for a larger sump.

http://www.chrysanindustries.com/pdf..._tsb071002.pdf

Interesting, I hadn't seen that TSB though I did read at one point that the '06+ I4 2AZs could use 5W-20. I always found it odd that my aunt's '06 Corolla takes more oil than my '05 Camry. Now I know why, and the '06+ 2AZ Camrys must have a larger sump too.

Thanks for the info. Maybe I should try 5W-20 in the Corolla next month when I change its oil cause right now fuel economy is mediocre at best. Between my '05 Camry, an '05 Avalon, and the '06 Corolla I just use the same 5W-30/10W-30 synthetic oil - well, in the Corolla sometimes it's just the cheap Supertech synthetic.

[mikered30]

Originally Posted by islandboy57

Interesting, I hadn't seen that TSB though I did read at one point that the '06+ I4 2AZs could use 5W-20. I always found it odd that my aunt's '06 Corolla takes more oil than my '05 Camry. Now I know why, and the '06+ 2AZ Camrys must have a larger sump too.

Thanks for the info. Maybe I should try 5W-20 in the Corolla next month when I change its oil cause right now fuel economy is mediocre at best. Between my '05 Camry, an '05 Avalon, and the '06 Corolla I just use the same 5W-30/10W-30 synthetic oil - well, in the Corolla sometimes it's just the cheap Supertech synthetic.

I doubt you will get more than 0.4 mpg bump using 20W over 30W.

[islandboy57]

Originally Posted by mikered30

I doubt you will get more than 0.4 mpg bump using 20W over 30W.

That's it? Well, it's going to get whatever I find then. I'd rather just run it with 5W-30 because the summers here are easily 90+ degrees and in stop and go driving I'm sure it's worse.