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OTC 3890 Brake Fluid Safety Meter - Compatible with DOT 3/4/5.1 Fluids
✅ In stock
F
Grade
Analysis Confidence
90%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 21, 2026 1:08 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The current price is slightly above the going rate for this product — worth watching for a drop.
- 📉It has been quite a while since a more competitive price was available, lending today's offer solid comparative value.
- 📈Prices have been moving higher lately — waiting risks paying more if that momentum continues.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
Amazon.com
🚚 Shipping
Free Shipping
Product Details
✓Check condition of brake fluid in less than a minute
✓Water can cause corrosion in system components and can vaporize under the high heat conditions of hard braking situations
✓Boils a small sample of brake fluid in the reservoir to test for water contamination
✓Will not operate if connected to the wrong polarity
✓Works on DOT 3 4 and 5.1 fluids and uses no consumable test strips
⚙️ Specifications
OTC
OTC
3890
3890
13 x 10 x 4 inches
3890
Manufacturer
OTC
Brand
OTC
Model
3890
Item Weight
1.1 pounds
Product Dimensions
13 x 10 x 4 inches
Item model number
3890
Manufacturer Part Number
3890
OEM Part Number
3890