So can I use this if I have a noisy diff but a non limited slip?

No, for a noisy diff I would look at a Lucas oil...after you have checked to make sure the noise isn't being caused by the bad news fairy. Take it to tech and have them check the gears. Or crack it open yourself and look for metal shavings.

does my 2005 4.6L lincoln town car use this? cant find any info

IF your Town Car has a limited slip differential then this fluid is indeed the proper additive if you are going to be renewing the gear oil in your T C.

can this be used on my 1997 awd mercury mountaineer

This is used for a clutch type rear end?

must I change differential oil before adding or can I add to oil already in it?

You could add it to the oil that's already in there but you may need to remove some oil to make room. BTW, Diff oil should be changed at 100K.

Genuine Ford Fluid Xl 3 Friction Modifier Additive 4 Oz

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4898 kr

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Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Drive smoother, quieter, and smarter with Ford Fluid XL-3!

EASY INTEGRATION - Seamlessly blends with existing lubricants following your vehicle’s guide
PRECISION 4 OZ FORMULA - Compact size ensures exact additive dosing without waste or mess
OEM APPROVED PERFORMANCE - Trusted Motorcraft formula meets strict manufacturer standards for reliability
OPTIMIZED GEAR PROTECTION - Reduces surface friction to extend differential component life and efficiency
SMOOTH RIDE ZERO CHATTER - Engineered to silence limited-slip differential noise for a premium driving experience

Genuine Ford Fluid XL-3 is a 4 oz friction modifier additive designed specifically for limited-slip differentials. It reduces chatter and hypoid gear noise by lowering surface friction, enhancing driving comfort and protecting drivetrain components. OEM-approved and formulated for automotive use, it integrates easily with your vehicle’s lubricant system following manufacturer guidelines.

Specifications

ASIN	B000NU5LP6
Best Sellers Rank	#27,693 in Automotive ( See Top 100 in Automotive ) #158 in Oil & Fluid Additives
Brand	Motorcraft
Customer Reviews	4.8 4.8 out of 5 stars (3,848)
Date First Available	March 4, 2011
Exterior	Painted
Item Weight	5 ounces
Item model number	XL-3
Manufacturer	Rain-X
Manufacturer Part Number	XL-3
Model	XL-3
OEM Part Number	0, XL-3, XL3

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4898 kr

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In stock

Sold byAmazon IcelandDelivered 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 Iceland.

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TrustScore 4.5 | 7,300+ reviews

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Genuine Ford Fluid XL-3 Friction Modifier Additive - 4 oz.

Description

Specifications

Common Questions