What oil should I use in Mazdaspeed 6

Messages
3
Location
Long Beach, CA
I just bought a Mazdaspeed 6 with 73K on it. I am changing all the gearbox oils to Redline tomorrow (MT90 trans and 75-90 in the transfer case and rear diff), and I need to change the engine oil too. I was thinking of using either the German Castrol or Mobil 1 synthetic 0-30 in the motor. any suggestions? I hear there are issues with excessive amounts of fuel contamination after the oil has been in there for a couple thousand miles. I drive 35 miles each way to work, and I get about 75% of it in traffic. On weekends I drive 25 miles to see my girlfriend in Los Angeles and drive around on LA streets during the day. Southern California has pretty mild weather as I am sure you know. I am going to use the Factory oil filter and I am looking to get 5K between oil changes so i am not doing a change once a month. The car is stock except for a AEM cold air. What does everyone think?
 

RogerHewson

Thread starter
Messages
3
Location
Long Beach, CA
Would Redline 0-30 work well< How does it compare to GC, amsoil and Rotella when it comes to holding up against fuel dilution? Where do you find Rotella? I don't know if I have noticed Shell oils at auto parts stores. But then I have never looked.
 
Messages
2,081
Location
Los Angeles, California
Originally Posted By: RogerHewson
I just bought a Mazdaspeed 6 with 73K on it. I am changing all the gearbox oils to Redline tomorrow (MT90 trans and 75-90 in the transfer case and rear diff), and I need to change the engine oil too. I was thinking of using either the German Castrol or Mobil 1 synthetic 0-30 in the motor. any suggestions? I hear there are issues with excessive amounts of fuel contamination after the oil has been in there for a couple thousand miles. I drive 35 miles each way to work, and I get about 75% of it in traffic. On weekends I drive 25 miles to see my girlfriend in Los Angeles and drive around on LA streets during the day. Southern California has pretty mild weather as I am sure you know. I am going to use the Factory oil filter and I am looking to get 5K between oil changes so i am not doing a change once a month. The car is stock except for a AEM cold air. What does everyone think?
RogerHewson, I don't know anything about GC or Redline products but since you mentioned considering using Mobil 1 then that's my suggestion to use. I've always been happy using M1 since I was able to afford it when it first appeared on the market. Using M1 for your typical driving habits and the 5K OCI is perfect. Durango
 
I drove my Mazdaspeed3 for 60k trouble free miles using PP 5w-30 and Mazda filters. The engine was spotless inside. Now about that transmission: you're going to want to use Motorcraft manual trans fluid XT-M5-QS. Just google it and you'll know. It turned my recalcitrant shifting Speed3 into slickest shifting car I've ever owned! I tried the MT90 and it was terrible in this trans. MTL wasn't any better. Finally, the XT-M5-QS turned my car into a highway porn star! Just trying to save you all the trouble I went thru.....
 
Messages
6,357
Location
KY
Originally Posted By: double vanos
I drove my Mazdaspeed3 for 60k trouble free miles using PP 5w-30 and Mazda filters. The engine was spotless inside. Now about that transmission: you're going to want to use Motorcraft manual trans fluid XT-M5-QS. Just google it and you'll know. It turned my recalcitrant shifting Speed3 into slickest shifting car I've ever owned! I tried the MT90 and it was terrible in this trans. MTL wasn't any better. Finally, the XT-M5-QS turned my car into a highway porn star! Just trying to save you all the trouble I went thru.....
I agree re the Ford XT-M5-QS. As for engine oil, I have 90K on my 2007 MS3 and I've rum M1 5W-30 since the first oil change. Up to 75K I ran a 5k OCI but I have since bumped the OCI up to 7.5k. UOAs are good, and while I don't abuse the car it does get driven pretty hard.
 
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