Oil Question.

[amillman2]

I just had my cars oil changed at my mazda dealership and i requested a full synthetic oil change and they did it then i got the invoice and didnt look at it til after i left and then realized it said they had put 5w20 synthetic oil in my car.. i called them back and they said they were 100% positive that they had put 5w30 synthetic in my car.. they asked the tech who serviced my car and he said he put 5w30 in.. i believe them but IF they had put 5w20 synthetic oil in my MS6 would it hurt?? or what would the effects of this be?? and how could i tell if they put one or the other in if its possible.

[amillman2]

oh yea.. btw service manual calls for 5w30..

[tonymontana1204]

It happened to me a few days ago, I went right back and had it changed to 5w30 synthetic. I believe the regular 6 takes 5w20 so the guy got confused I guess. Good thing I noticed as soon as I pulled out of there. 5w20 is too thin for the seals on the MS6, some people even go up to 5w40.

Read this, lots of good information.

http://www.mzspd6.com/forum/showthread.php?t=123721532

[amillman2]

i might just go back and have them re-change it anyway.. the reciept says 5w20 on it.. so idn.. makes me real uneasy about those seals leaking oil.

[amillman2]

yea im too scared about the STS im going back in an hour to have them for sure put the right oil in.

[sharky]

That oil probably isn't going to hurt, especially since it is starting to get cold.

I would have them fix it if it was me, but I wouldn't worry about hurrying in.