Has anyone used Royal Purple diff fluid. How was your experience?

 

I wouldn't use it personally, the diff scale goes Redline,motul, amsoil(those are not in order as everyone has their own opinions), valvoline, mobil 1, then whatever else...the top tier are the ones I listed though

 

Thanks. Appreciate the advice.

 

LE1605 can be found at reasonable prices. Just look harder. Only need a quart.

-- Chuck

 

I just recently purchased an S with only 30,000 miles on it. Is it safe to assume that with such low mileage the factory diff fluid will be fine for a while? I do not track the car or drive it hard yet, just a little spirited driving here and there for now.

 

Mine had 38,000 miles. I changed ALL the lubricants! Costs very little. I think the standard interval for the differential is 30,000 miles, right where you are.
It's in your owners manual. If you have a 2006 or later is will show up on the maintenance minder.
-- Chuck

 

Congrats on your purchase! As I understand, how hard you drive can be a misleading indicator. It is entirely possible the differential works harder cruising a parking lot looking for that perfect space than spirited driving.

Fluid is cheap and there are lots of DYI's on this forum. Learn from my mistake and change the fluid as recommended. [emoji with pockets turned out]

 

Sorry, I don't know how to do the other posters comments in the box, because I'm old (first Civic was 1975 1200cc with 12" wheels--no, BEFORE the CVCC engine) The young guys who used to work with me used to hate my answer to everything: Do the math, and/or Look at the numbers. You can "like" a brand better 'cause it sounds cooler at the Tail of the Dragon barbeque. You can look at the color as it comes out (dark often means very little) and smell it as it comes out. But the man with the oil analysis charts is the only guy (IMHO as you young guys say) who knows what he is talking about as he had guys count every freaking molecule of metals worn off the gears, bearings and everything!!!

Back when I first got my AP1 I obsessed over fluids, especially for the diff as there is no Honda fluid. I went with Lubrication Engineers 607. I bought several quarts and now I'm out so I'm researching again. I guess time has moved on and 1605 is the replacement. At least against this Motul stuff it is clearly superior. I'm a big proponent of Amsoil for the engine, but I've used LE for 11 years and will continue. BTW Look on those charts and I think the second row down in the second section of the lubrication specs uses the abbreviation "cts", or centistokes, what it says on the bottle for the nominal or starting viscosity means very little, the engineers (all hand picked throughout the Honda system) only care about the centistokes at operating temperature. If this sounds like a foreign language to you, go to bobistheoilguy.com and read his 6-7 pages of what he calls Oil 101. You will be dumbfounded on how many misconceptions you have about oil. I was.