jimSD63

Greetings,

I'm fairly new here. I have an 06 GT w/manual transmission. About 9,500 miles on her. I am planning on changing my manual tranny fluid and I want to know if Royal Purple is OK to use. I know the owners maunal says use Mercon ATF and RP has two kinds of fluid: Max ATF and Syncromax. I was going to use the Syncromax as that seems to be a better product. Anyone agree or disagree?

Also, where is the fill plug? I can't see it.

Thanks for the help!

jk

classj

Personally, I would just leave it alone. Manual trans fluid does not need changing at 10K miles. And in diffs and transmissions, I have had most luck sticking with factory fluids.

I pulled my hair out for a month with a mopar differential that started making noise after a fluid change. Finally one day I drained and flushed it, and put mopar fluid in. Problem was gone within 10 miles of driving.

jimSD63

So there isn't any need to get rid of any metal shavings that might be present from the break-in period? I though that some poeple with earlier years had good luck with royal purple. I know some cars are very finicky about their gear oils, is the 05-07 mustang GT one of them?

jk

Norse1974

No,,,the 05-06-07 GTs are not "finicky" when it comes to upgraded additives.I have Royal Purple through out my WHOLE drivetrain(06GT).Not a problem one!Their site claims a RWHP increase as well(8HP?)if used through whole drivetrain due to it freeing up engine/tranny/gear drag.I don't know if it gave the extra RWHP or not but my car responded well to it.I will say this,,,if your gonna use it in your tranny then use it in the motor & rear also.Otherwise just stick to the stock fluids like mentioned earlier.

Twister086

i have already tried the regular royal purple ATF in the manual trans with 18k on it... i didnt notice a difference... so I'm going to try the synchromax next... i have heard some good testimonials bout it smoothing out shifts... we shall see...

jimSD63

yeah, I thought the regular ATF was more of a "normal" oil (not the same additive that's in the engine oil) and the syncromax was top of the line.

Twister086

yeah im running the royal purple 5w-20 in my engine with a motorcraft filter

smoke14me

You can never go wrong with Royal Purple, I would recommend it for any and all oil changes.

LAK3RS

I'm running Rpyal Purple 10w-30, and my car is perfectly fine, though I would like to know if it does actually give you any gains at all??

LTHL PSI

Royal Purple works wonders, we have them available for purchase on the site and usually always in stock. Check the link

http://dagostinoracing.com/index.php...cPath=111_1894

Thanks,
Derek