Royal Purple Synchromax

[Gryphon]

Ahh, the learning experiences.

After nearly lunching my T5 from putting ATF in it (ONLY World Class T5's , as found in Mustangs, take ATF because of the different bearings, Jeep T5's take gear oil.) I had to do something drastic to keep it on the road.

I had nearly lost the ability to shift into second, having to double clutch and match speed/rpms like a big rig. Not good. Knew it was well time to change the fluids, so I did...and the lube flushed out like nasty water...no bueno!

I decided to fill it with Royal Purple. Muy bueno!! I have been driving on it now for several days with about 100 miles on the fluid change.

Second shifts right again, and the rest of the gears work much better. I can't say I ~feel~ a difference other than that, but the trans is quieter too. I had a gnawing sound coasting in first with the clutch depressed...that is gone too.

Not claiming it to be a miracle worker, and yes, I know ya can't fix broken with lube, but hey, it sure was worth the 30 bucks!

http://www.4wd.com/productdetails.aspx?partID=4332

[scobar]

I use Royal purple in axles, tranny & transfer case. I agree it's top of the line in lubricates and well worth the extra dollars.

[the Captain]

the shear is too high with gear oil in a T5. thats why you heard the gnawing sounds, lucky they weren't popping sounds. (thats how i blew up my first T5 the second time, 5 total, 8 pulls, see signature) Even Jeep didn't know what kind of fluid was right for them. it changed from ATF to gear oil and ATF to some other fluid that was the two mixed. Thats pretty much why syncromax works so well. The newer WC T5's were built to run ATF as were the early model T5's but the early model has some issues with it. basically you will burn up bearings with ATF and shear off gears with gear oil so a mix of some sort is necessary. i've got 4 quarts of syncromax sitting on my shelf right now...any takers?

[I Drive Topless]

Yeah, you giving it free? lol

[TJMagoo]

I use Royal purple in axles, tranny & transfer case. I agree it's top of the line in lubricates and well worth the extra dollars.

Agreed. I run in it in everything in my comp rig. Love it! :lhdevil:

[GrassRootsVP]

I swear by all Royal Purple products. I beat the nightmare out of my Jeep and after 7,000 miles of the 10w30 the oil was as purple as the day I put it in.

The differential fluids are amazing also !

[xjjeep98]

Amsoil all the way. Im suprised no one uses Amsoil. What Gives?

[the Captain]

Amsoil all the way. Im suprised no one uses Amsoil. What Gives?

its baloney thats what gives. i've seen plenty of sludged up engines with owners thinking they hit the jackpot with 20K+ oil change intervals. i take out the drain plug and the stuff comes glugging out just like regular oil after way too many miles. the whole trick is to change your oil when it needs it. not 3000 or 5000 miles, not every two months or whatever. Amsoil turns into water just like the rest by about 15K and starts to thicken and gum up just like the rest after that.

the cost versus conventional is a big problem and there's a ton of maintenance necessary to properly upkeep a vehicle year after year. keeping your tires properly balanced and aligned cost money but can save you at least a couple thousand on a car you plan to keep for 300K. letting your brake vibration go for another 5k on any vehicle can quickly cost you a set of rotors. and slipping the guy a 20 to turn a set of out of spec rotors won't save you money. cutting rotors with too much runout will just put you back in the shop in less time and will wear out the caliper slides in a hurry. a dirty air filter can cost you ten percent of your fuel mileage and that adds up. paying 40$ for your oil and filter is just going to cut in to those other maintenance item costs.

its almost impossible to keep a car in good shape cost wise as the amount of repairs can easily sit at at almost 2 grand a year. all the while the engine can churn along just fine on conventional oil. the engine internals don't just break they are (unless defective) going to be killed by some other engine system. a cracked head or a lack of oil changes. carbon buildup from running spark plugs past their service life, or allowing a check engine light for a bad upstream O2 sensor to screw up the fuel ratio for too long. theres a ton more i could name.

the chief cause of engine failure is a lack of oil changes. i've put in a motor for an Amsoil user, a Mobil 1 user, and people who use conventional oil. pretty much all of them were caused by a lack of maintenance. plenty of them had regular oil changes but couldn't afford to fix a leaking rear main seal or a bad head gasket. what i'm saying is its not the oil that kills the motor, unless you run Amsoil for 25K between oil changes. we put a motor in for a guy just a few months ago. it looked like they were running candle wax as engine oil. what ya gotta realize is that oil gets dirty at the same rate no matter how expensive or high tech it is. it may keep its viscosity for an extended period of time but it gets just as dirty. change your oil when it needs it and your engine will be just fine so long as you keep up with everything else.

sorry to rant, i'm just a little bothered after work today when two customers of mine decided to neglect some much need work. hopefully their high tech oils will save the day (extremely doubtful)

had to add that syncromax is a good thing. and royal purple diff fluid doesn't smell as bad as the others and thats a good thing too.

[TonyTJ]

Royal Purple is all I use for engine, diffs, and T-case. Not so sure about the automatic tranny though...I've been sticking with OEM stuff for that. Great wear, lasts, and quiets. I've sent my oil out for analysis and have gotten back two great reports in the last 2 years. To me, it's totally worth the few extra bucks over Mobil 1.

[weptotly]

After this review Im still conflicted. When it is hotter out or the car is fully warmed up the Royal Purple works quite well actually and is overall silky smooth. Now Im still not sure if what seemed like quicker transmission response is jerkiness from the transmission due to the Royal Purple though.

Things in the cold definitely felt better with whatever original oil was in my car.

Im going to swap this oil out this week for sure and give Castrol Hypo C 80W90 non-synthetic a review and see how the gearbox likes it.

[the Captain]

don't put gear oil in your T-5, it will blow up. no 80W-90 anything.

[Toralf]

I've heard and read a lot about Royal Purple Synchromax and thinking about putting it in my CJ with the next change. All I have to do is find a source. I know that 4WDH carries RP but it's not allowed to import chemicals, so I have to find a local source...

[47driver]

had to add that syncromax is a good thing. and royal purple diff fluid doesn't smell as bad as the others and thats a good thing too.

The smell alone could convince me to change.

Toralf, if you are close to a military base, and had a US military friend there...4wd could send it to my APO, then I could send it free to his APO and circumvent the no import thing.

[Gryphon]

Toralf: here's the European distributor:

Alex Priori
390 717950558
renox@renox.com

Renox S.R.L.
Via Del Bosco, 12
Monterado(AN), Italia 60010

http://www.royalpurple.com/dealer-international.html