Cathy

Im not sure why the manual says that if first engine oil change has been filled with 5w-20 then the next one has to be 0w-20? I have a 2013 gs and intend to use dino 5w-20 all the time. Any possible issues? Logic tells me nothing can go wrong but I figure if they want you to use 0w-20 at least 50% of the time there must be a reason.

P.S I know 0w-20 is better in winter but the manual doesn't seem to be concerned over when you fill 0w-20. They just want you to at least fill 0w-20 between 5w-20.

bclexus

Don't worry about it - any old oil will do just fine for you. Myself - I use recycled, all-purpose, non-detergent, cheap oil...

MH6

Not sure were you read 5-20 must be used on first oil change and then changed to 0-20... it says, if 0-20 not available, then 5-20 may be used and then changed to 0-20 next oil change on page 755 of the manual.

Also, to the best of my knowledge all 5-20 and 0-20 are only synthetic. I personally would not run anything other than 0-20 synthetic in your GS as recommended.

MH6

LOL ..... thats just wrong ....... LOL

ITDude

I read the 0W-20 is recommended for fuel economy. I don't see the sponsor advertisements when I log in anymore, but one of the forum sponsors said most of the engine wear occurs when the car is first started. If that is true, then the lighter the oil, the quicker it gets pumped up to the top of the engine.


The 0w-20 oil has been more expensive than the 5w-20 oil, but since the oil change frequency is now at 10K miles, I would gladly pay the extra money to use the recommended oil.

99alta

It's true, it takes much longer than you would think to get oil to the top end when it's -30C

What I find strange is Lexus say's change oil at 10k miles in the U.S. and here in Canada 8k km's ?
So why is Lexus telling us Canadian's to dump our oil a full 8000km before the U.S. vehicles ?? It's ridiculous and just plain environmentally irresponsible! It actually PMO when they are exactly the same vehicle!
Their hands must be brown from pulling all these different number out of their ...

Cathy

not only that, the manual says if changed with 5w-20, next oil change MUST be 0w-20

Its like you can alternate between them, but you cannot fill 5w-20 everytime. where is the logic in that?

99alta

Canadian Manual says to always use 0-20w.
Quote from the manual " If SAE 0W-20 is not available, SAE 5W-20 oil may be used. However, it must be replaced with SAE 0W-20 at the next oil change"

If I lived in a hot climate I'd be using 5W-20 all the time; else 0W-20 all the time. But we are splitting hairs here as there is not much difference between the two!

Joe166

There is obviously SOME difference. Why would the engineers at Toyota bother telling everyone to use one weight of oil when another weight would be better? Do you think they want to spend millions of dollars repairing engines under warranty?

I think I know a LOT about cars (but I probably don't) but I would hesitate to substitute my knowledge for that of professional engineers who are paid to do this, unless there was a substantial economic advantage to the employers of the engineers to make one recommendation over the other. I don't see any advantage to Toyota Motors since, as far as I know, they don't make either of the mentioned oil weights.

ITDude

I think you are spot on with following the car manual recommendations. Those engineers have lines of engines for testing. They try various things and then push the engine until it breaks. Their recommendations are the based on what they think the correct balance is between performance, economy, wear, and driving conditions.
The oils have come a long way also. These are not our grandfather oils where you had to run 70w oils in performance engines.

jkeller

This is a topic that makes some folks go mental, the boboilguy website is proof of it. Where else can you have endless threads about weather Pennzoil is better than Quaker State? 10k is probably too many miles for dino oil, I'd stick with any synthetic 0w-20.

Has anyone here ever seen any motor oil cause an engine failure? I'm not talking about oil that wasn't changed for 30k miles, but a motor oil failure within manufacturers changing spec.

08sgmis350

iTrader: (4)

What type of oil do you guys use for oil change? I've been using Pennzoil Platinum synthetic oils on previous cars. Anyone use Pennzoil platinum here? Can I change oil every 9k~10k mile with that oil?

Cathy

true. if dino 5w-20 is accepted by toyota for 2gr-fse on the 3GS I am confident putting them in 4GS long term and changing them at 5000 mile interval.

Cathy

If you drive at least 50% on free flowing highway you should be able to buy run a uoa to be sure.

rjm

Logic tells you nothing can go wrong when you don't follow the manufacturer's recommendations?