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Eaton Detroit Truetrac Differential 30 Spline 1.31in Axle Shaft Dia 3.73 & Down Ratio Rear Dana 44

Marsoni M251S
Sale price$340.00
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Eaton Detroit Truetrac Differential 30 Spline 1.31in Axle Shaft Dia 3.73 & Down Ratio Rear Dana 44The Detroit Truetrac was the first helical gear differential ever introduced into the automotive aftermarket as an Eaton brand. It remains the leading helical gear type limited slip differential in the industry. Detroit Truetrac's proven helical gear design eliminates the need for wearable parts, resulting in maintenance free traction recognized not only for its toughness, but its smooth and quiet operation as well. Proven design, low cost and
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4.8 ★★★★★
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NoName4U
Lowell, US
★★★★★ 5
Best Oil Brand Available
Best automotive oil on the market. Only brand I will use in my cars. Used specifically for a 2018 BMW X5.
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Reviewed in the United States on February 27, 2026
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Bob
Fort Morgan, US
★★★★★ 5
Good product
works well for bmw.
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Reviewed in the United States on January 21, 2026
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SChain
Natrona Heights, US
★★★★★ 5
Great oil and makes my engine run quieter
I noticed the engine running much quieter using this oil. The pour mouth is pretty unique for this brand, you can just open the interior cap, pull up the accordion neck and pour into the engine which provides better control over traditional wide mouth, thus less messy. This oil rarely goes on sale and is typically 1.5x to 2x more expensive than the more common US brands.
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Reviewed in the United States on August 28, 2025
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Cooch
Whiting, US
★★★★★ 5
Best synthetic oil BMW
Excellent synthetic oil BMW 328I
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Reviewed in the United States on February 6, 2026
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Malu buys everything
Cuba, US
★★★★★ 5
Last long
Love it ! Since I have a BMW this oil it’s good for it . The Price is good . Last long . No engine noise Or oil burning. Even the color looks good after 3 months.
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Reviewed in the United States on March 9, 2026

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