Do you have to flush the transmission to use this,or can l just add this to existing transmission fluid, thanks for the feedback

After 50,000 miles you should change your transmission fluid (and filter unless it's a screen type) if it's still bright red. But If it's very dark red or even worse black then flush the transmission it's money well spent to save your transmission. Keep in mind it will look like red metallic paint that's just part of normal wear. If it's bright red then just drain some transmission fluid to keep it at the proper level. Overfilling an automatic transmission by just a few ounces can cause it to leak. Best of luck to you.

Does this work on a Prius?

I believe it works on any automatic transmission. Call Lucas Oil company to make sure and/or Toyota

he can use on any transmission fluid?

Yes it's compatible with conventional and full synthetic transmission fluids note that this product is not compatible with CVT fluid

do you have to drain any fluid

Check your fluid levels first, always! If it's full, or close, then drain the appropriate amount. 32oz bottle, drain 32ozs. Keep the old fluid just in case if you do a drain & fill on a trans that hasn't been serviced for 10+ years or over 30k-50k miles. That fluid may contain clutch material that's allowing everything to work properly, and fresh fluids can disrupt the fine fluid friction balance needed for an Auto Trans to work correctly.

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Lucas Oil 10441 Automatic Transmission Fluid Conditioner - 2

Product ID: 254053349

Details

Brand
Lucas Oil
Item weight
0.55 Pounds
Liquid volume
1 Fluid Ounces
Material
Synthetic
Package information
Bottle

⏳Extends transmission fluid life

🔇Reduces noise & shudder

⚙️Improves shifting precision

R$426

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Description

⚙️ Shift smarter, drive smoother — don’t let your transmission miss out!

UNIVERSAL COMPATIBILITY - Works perfectly with all ATF fluids—synthetic or conventional—no guesswork needed.
MAXIMIZED FLUID LONGEVITY - Protect your transmission with additives that extend fluid life and save you money.
SEAMLESS GEAR TRANSITIONS - Experience smoother, slip-free shifting that keeps your drive flawless.
WHISPER QUIET PERFORMANCE - Cut down on annoying noise and shudder for a refined driving experience.
TRUSTED BY PROS ENTHUSIASTS - Join over 1,200 satisfied users who rate it 4.7 stars for reliable transmission care.

Lucas Oil 10441 Automatic Transmission Fluid Conditioner is a premium synthetic additive that enhances automatic transmission performance by preventing slipping, leaks, and wear. Compatible with all ATF fluids, it improves shifting, reduces noise and shudder, and extends fluid life, making it an essential upgrade for maintaining smooth, reliable vehicle operation.

Specifications

ASIN	B003JU71YG
Best Sellers Rank	#34,604 in Automotive ( See Top 100 in Automotive ) #50 in Automotive Transmission Fluids
Brand Name	Lucas Oil
Compatible Material	Automatic Transmission Fluid
Container Type	Bottle
Customer Reviews	4.7 4.7 out of 5 stars (1,223)
Global Trade Identification Number	00049807104412
Item Form	Oil
Item Weight	0.55 Pounds
Liquid Volume	1 Fluid Ounces
Manufacturer	Lucas Oil
Material	Synthetic
Model Number	10441
Number of Items	1
Number of Packs	1
Part Number	LUCA10441
Recommended Uses For Product	Automotive
Specific Uses For Product	Prevent Corrosion, Enhance Automatic Transmission Performance
UPC	049807104412 049807804411
Unit Count	591.47 Milliliters

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R$426

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Brazil.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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The delivery time was excellent, and the packaging was secure.

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