all wrong ...

 

What do you think then, instead of simple one liners...

 

It amazes me that people refuse to accept that 40-50W is needed to properly protect the bearings in this engine despite the overwhelming evidence to prove it.

Bearings are protected by Hydrodynamic film strength UP UNTIL the oil is squeezed out due to load. Then you better have sufficent ZDDP.

Since engines and oil were invented this scenario remains constant.

 

*shurgs*

people so afraid of using 20w50 ... They just have to find 32408124071830579159 excuses to NOT to use it ...

 

my oil change is coming up this weekend ill try out 20w50. Should i use regular oil like castrol gtx or synthetic like royal purple or mobile 1.

 

What oil were you using before and how many miles are currently on your vehicle?

 

this is the first oil change since i bought the car (the guy who i bought it from takes it to a shop to get the oil changed), the guy would use 5w20 castrol gtx. The car has abobut 80k miles on it.

 

LOL!:yelro tflm

I'm drunk and in China right now (10:30 at night) and this just made me laugh. Thnks.

 

Then stay with conventional oil Castrol gtx, and try out 20w50. Do not switch to synth as it might cause issues with the seals since the engine has a good number of miles on it already.

 

thanks for the tip, great help.

 

From my understanding, this has only been an issue a long time ago with certain synthetics interacting with certain materials that made up the engine seals. The user should be fine with whateverW-40 or 50 oil. I would suggested an group IV or V synthetics.

 

yeah no problem. Since your engine has been running for a long time with conventional you probably have some sort of resdue from the oil along the seals. If you were to switch to a fully synthetic oil, after a couple thousands miles the resdue on the seals would be cleaned off then causing the wear and tear from the seals before to show and get worse.

So its better to just stick with the same type of oil at such a high mileage. If you were below 20k then switching to synthetic would have been ok as the wear and tear hasn't progressed yet.

 

I've been satisfied with the Valvoline VR-1 non-synthetic 20W-50 oil which has a high ZDDP content.. It's also relatively cheap, and can be found at most auto parts stores.

 

Man of Mystery!

 

I am not...I have been using 15W40 since day one in my 09...well since day 61 when I changed the Oil.
My Mazda owners manual says I can use it, did you know it also says I can use a 20W50..

 

I wonder if they only recommend it now since the S2 has the larger pump, and higher pressure regulator. May I propose a toast? Long live the S2 renesis!

 

Well for 09s here in the US, they still only recommend 5w20.

 

That's because we get the magical rotary here

 

Would that be the magical exploding rotary?

 

Maybe reduced engine life is totally worth the extra .1 MPG

 

Service people deal with the symptoms, the symptoms rarely mirror the cause but are rather the end result of the cause

I don't have an "opinion"

buh-bye

 

I thought I saw a post saying the Aussie oil spec was 0w-30 dino. Could you post a scan of the oil spec page from your owner's manual?

 

*sigh*

Mazda USA used to list a chart out ... but I guess the US customers are too dumb to decide what they need so ... yeah just push a "we recommended this oil, cuz it gives us best cafe numbers, " and call it a day, it lowers support cost so yeah, thats it

S1 has the same chart.

 

Mazda needs every single drop of mpg they can get !

remember, Rotary is a very thirsty engine !

 

*sigh*

can you like ... argh ...