Will thia work for my 99 s10 manual transmission?

I have used it in my 98 S10 with the nv1500 5 speed. Worked fine .

I will be replacing the Pensoil Syncromesh in my Jeep Wrangler with the NV3550. Will this be safe to use?

I don't have a Jeep, but the Royal Purple Synchromax fluid is specifically designed to replace all Synchromesh applications so as long as your Jeep's NV3550 calls for Synchromesh (which I think it does) then you should be fine. Synchromax would be a good upgrade.

Anybody try this in sonic with a 1.8 5 speed? Thanks

I'm sure the trans in a sonic is Korean made and I use it in my Honda civic si and it made my shifts smooth and precise

Will this work in a 2014 mustang manual?

There is a tool on the Royal Purple website: you enter your make and model (and year) and it shows you all the recommended products for your car (engine, transmission, transfer case, differentials, etc.)

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Description

⚙️ Shift smarter, not harder — unlock peak transmission performance!

VERSATILE POWERHOUSE - Perfect for manual transmissions, 2-cycle motorcycle gearboxes, and multi-viscosity oil requirements.
ULTIMATE GEARBOX CLEANSER - Superior oxidation stability cleans and protects your transmission for longer oil life.
BUILT TO LAST UNDER PRESSURE - Enhanced wear protection keeps your manual transmission running like new, mile after mile.
EFFORTLESS SHIFTS EVERY TIME - Experience smoother gear changes with Synchromax’s advanced friction reduction technology.
COOLER OPERATION PEAK PERFORMANCE - Lowers operating temperatures to extend transmission life and maintain power output.

Royal Purple Synchromax is a high-performance synthetic manual transmission fluid designed to reduce friction, improve shift quality, and protect against wear and corrosion across a wide temperature range. Ideal for manual transmissions and 2-cycle motorcycle gearboxes, it extends oil life with superior oxidation stability and keeps your drivetrain running cooler and cleaner.

Specifications

ASIN	B001DKTG0G
Best Sellers Rank	#509,501 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #418 in Gear & Transmission Fluids
Brand	Royal Purple
Brand Name	Royal Purple
Container Type	Jug
Customer Reviews	4.8 out of 5 stars 1,616 Reviews
Global Trade Identification Number	00641330015120
Included Components	Auto part, Automotive Accessories, Replacement and Performance parts
Item Form	Liquid
Item Type Name	Synchromax Qt. Transfluid
Item Weight	454 g
Liquid Volume	1 Quarts
Manufacturer	Royal Purple
Material	Synthetic
Material Type	Synthetic
Package Information	Jug
Recommended Uses For Product	Corrosion Inhibitor
Specific Uses For Product	Manual transmissions, transfer cases, 2-cycle motorcycle gear boxes, wide temperature range operation, friction material compatibility, corrosion and oxidation protection
UPC	641330015120
Unit Count	946.35 Milliliters
Viscosity	1
Warranty Description	No

Reviews

V**R

lubrificante

ottimo

20.12.2023

A**E

Bon produit

Super huile pour boîte

16.06.2025

C**S

Normal, nada especial.

No he notado ninguna diferencia ni mejoría respecto al aceite de transmisión de la marca Honda. Esto quiere decir que es un producto caro para lo que ofrece. Probé un producto de una reconocida marca alemana y he notado una diferencia importante, las marchas entran mas suaves y no me cuesta meter la marcha atrás. Mi conclusión es que es un producto caro para lo que ofrece. El aceite de transmisión de la marca alemana es a mitad de precio y me va mucho mejor.

10.01.2023

S**R

I should have done this sooner..

12.04.2014

T**X

I was skeptical this would make any difference...but it did. And the difference was impressive. I'm sold!

16.09.2015

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