What motor oil recommended for mazda fd3s?
I now I have the castrol gtx3 10w40 full mineral but is not more trade ....


Sorry for my bad english

 

since your new...

20w50: summer
10w30: winter

please search the FAQ...its one of the 3rd gen stickys at the top of the page

http://www.ferrarichat.com/forum/faq...=haas_articles

 

I wondered brand and model ..... not grading

 

some may argue, but brand does not matter. just change the oil quite often. no need to use synthetic. it mostly comes down to preference

 

Castrol GTX is a good mineral oil (that's what I use)

If you wish to switch to full synthetic I would (personally) use Mobil 1. I used it until I changed back to mineral for my new turbo's.

 

idimetsu rotary racing sinthetic runs well. its what my car came from japan running and still runs. its what the mazda race team runs so I have got to assume they know something

 

Castrol is very good. I also like Valvoline. Quaker State is another good one, as is Mobil.
Just stay away from Penzoil....that stuff is crap.

By the way, the manufacturer recommends 5W-30 and 10W-30. This is in the service manual, the owner's manual, and on the sticker on the hood.

 

the castrol GTX magnatec is that okay?

is 100% mineral oil?

 

Not sure what you mean by Castrol GTX "Magnatec". I just know GTX as GTX.

Yes, it should be %100 mineral oil unless it states Synthetic Blend, or Fully Synthetic. Read all the print on the bottle of oil to be sure if you are truly concerned.

 

i use . valvoline R1 20w50 here in florida

 

ok thanks
Then I took GTX protection plus

 

i just read the entire ferrarichat post. and the main thing i got out of it, is that the common assumption of "use thicker for summer" is false.

20w-50

the first # has no bearing on what kind of protection the oil will offer at operating temperature.

the author of the ferrarichat post consistently leans towards thinner oil as better than a comparable thicker oil for each application.


not saying 50 is too high for florida summers, but the 20w is.(based on ferrarichat)

 

I also just read the entire Ferrarichat.com post, very interesting indeed, it certainly changed the way I see the oil ratings.

 

Think the magnatec is part synthetic?

I always just use 10w40 castrol mineral,as do the other lads running FD's.

But I have heard of fds running synthetic,but I wouldnt,just my preference

 

I had read that through a few months ago. Based partly on that, on Mazda recommendation, on what my rotary mechanic suggests, and the fact that summers are mild here in the PNW, I put in Castrol GTX 10-40 last weekend when I changed the oil.

The article is excellent and worth the time reading.

 

unless someone has some valid argument to this article, i think im gonna go with 0w-40 royal purple my next oil change(already using, i think, 10w-40 royal purple)

that article is well thought out, and it appears he really knows what he's talking about, from research and experience.






edit: i just thought of something. The article basically says under all circumstances 5W-XX or 0W-XX are the best choices.........well, why are there any other choices even still produced?