yeah i heard about an additive in Mobil 1 at one point but not sure if it's jut rumor or true

 

my dealer claims that the use of anything but mineral 5-20 could result in warranty problems. He showed me a car with a bad engine in the lot that mazda refused to replace because of non recommended oil useage. The owner walked away. With the new 100K engine warranty, why would you risk a problem. Logic dictates that if a particular oil would save mazda warranty claims they would recommend it. Be carful with what you believe.

 

I thought it was pretty amusing that when I reached the bottom of page one of this thread the ad that was there was for Castron 5W30 Syntec.

Coincidence? :-)

Dave

 

My dealer claims that you can have warranty issues if you do not use mineral 5-20, the point is with the 100k engine warranty why would you take a chance. He showed me an 04 with a bad engine that mazda refused to replace and the because of improper oil useage. The owner walked away, I'm trying to make a deal. Logic dictates that if Mazda could avoid warranty issues by recommending a heavier or synthetic oil they would, Duh. Be careful with what you believe to be factual. Lots of claims but no data.

 

Nothing like the revival of the old oil debate.

 

Why is it that Mazda does not recommend 5w-20 in other parts of the world but rather 5w-30? CAFE fines are in effect here in the US but not elsewhere.

 

lol i agree

 

nycgps is gonna eat your first born for that comment..

 

I have almost 25,000 miles on my re-build and drive in South Florida traffic. I change the oil at least every 3000 miles and have stayed with Castrol's non-synthetic oil. Only 5-20 and the motor runs great and no issues. I read about the synthetic debate and have decided to stay with the spec oil rather take any chances. I do red line the engine at least once a day and have a K&N drop in as the only mod. Call me chickenshit but am staying with non-syn.

 

I was just telling you my opinion on the matter.

Dont failed due to oil related problems? ROFL LMAO LOL

The more bullshit you write, the more we know that how clueless you're.

Please dont say anything when you dont know anything.

I would love to see a printed statement from your dealership about that. So I can bring it up to a court and sue them.

Go ahead, try to get them put the exact same words in writing.

Im hungry, I'll eat you first


The more I read and study about this engine, I think that they should've delay this engine for another year or so before they push it out to the market. There are obvious faults that they should've nailed it before Mass production. At least they will have enough time to see the problems created by 5w-20 in the long run.

People, You can use whatever you want. but Human has a history of "believe what they want to believe" , not "believe because its the fact". Mazda is a company, they sell cars. In order to survive they have to meet certain rules . Especially in the North america Market where laws were set by clueless politicians and not scientist. Thats how crap like 5w-20 was born. Even Castrol knows that 5w-20 is for Fuel Economy and not Engine protection. So tell me. Whats good about 5w-20 if protecting the engine is WHAT you're looking for.

 

No, Sorry, they DONT, versus detonation, warped seals from heat etc.

If this subject has to apply to anything, its related to TURBO rotarys. Because of fuel dilution.

I want you to LIST down people that have torn down engines and have found a discrepency due to a "different manufacturer" of oil.

"O NOES, we put castrol instead of mobil 1!!"

GTFO

I think you need to study other things besides being the "oil guru" here and actually learn something.

If you can post actual FACTS, written documents, stating you "SHOULD" use a particular oil because it will prolong the life of your rotary, and proof that they did it by testing, then yes i will say i dont know ****.

But from your quote on me, actually defending what you think is right when its wrong, sorry but thats makes YOU, the "oil guru", an idiot.

 

So say I move to Japan tomorrow.... and say i'm using 5w20 now! Now that I live in Japan I automatically I am supposed to use 5w30? So I put 5w30 in drive around the 6 months i'm there! 200 miles I come back to the U.S. I changethe oil with 5w30...I come bakc and now I have to change it to 5w20 becuase I"m in the U.S.? You tell me why they reccommend 30 wt everywhere but the usa. It is becuase of the fuel mileage number they must meet...thicker oil is always gonna protect better no matter what that is a plain fact...I use 5w30 and I use it becuase I feel that is the best oil that I can use for everyday driving here in FL......

the point to this story is that mazda is mazda no matter where you go whether it be US Japan africa no matter what it is the same company y do they need to put OUR engines at stake with this *** oil (water) when every other 8 in this world is reccommended to use 30wt?

-end rant

 

Yeah, oil is oil.

Everytime i go onto this forum, the topic of the day is "OIL".

You guys are driving yourself nuts.

A top name manufacturer 10w-30 and you're FINE.

If you live in a warmer climate, say texas, then i would run 20w-50. Because oil thins when its hot (obviously).

If you change your oil religiously, you will not run into any oil related problems. You'll likely to blow a coolant seal before some damage occurs from oil going by past occurances of rotarys. There are TONS of great info on rx7club for that. I have owned a rotary for many years. Shop owners of DECADES have posted their input on this subject.

You guys are worrying for nothing.

 

I don't think that it's us worrying just gettig rowled up haha about what right use what you feel is right and ur b ok....personally iwould not use something as think as 20w50 i feel 5w30 is fine but that's my choice say exact thing as I like certain things on my car other ppl hate it's my car, it's your car etc do what YOU like not what others think you like...

 

What does the manual say about oil changes? I believe its every 7500 miles. Who in the hell is the genius that said you have to change your oil every 2500-3000 miles? The answer: The oil companies like Exxon-Mobil that are making $11.68 billion per quarter.

Synthetics are perfectly fine in the rotary engine. The dealer doesn't know what oil you use unless you tell them. They sure aren't sending it out for testing.

It is a known fact that dealers plain and simple just don't like to do warranty claims. They make nothing off of them and it takes away from easy $ like charging stupid people $40 for changing a cabin air filter that takes 2 minutes or $39.99 for an oil change.

 

Paint me naive, but I believe dealers make an absolute killing doing warranty work - it probably accounts for 80% or more of the major repairs work they do - paid for by the manufacturer.

 

yeah they have to make some money off warranty work

 

EXACTLY.

Which is why you shouldnt always go by what the manual "says".

I have went to school for this, i know MANY people as automotive technicians.

Its all a gimmick, to get people to spend money eventually.

Sorta like this thread.

Just get something name brand and you're fine. lol

 

AMSOIL strictly for me.=Category IV

Mobil 1 = Garbagee. Category III