SKU: 73975641100

OTC 5025 Diesel Exhaust Fluid (DEF) Refractometer

Sale price$105.22 Regular price$116.91
Save 10%

Pay in installments of $29.23 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

OTC 5025 Diesel Exhaust Fluid (DEF) RefractometerThe Refractometer is a portable. precision. optical instrument used for measuring the Diesel Exhaust Fluid (DEF) concentration. When a liquid sample is placed on the prism. the light passing through it is bent. The more concentrated the liquid. the more the light will bend. The Refractometer contains a reticle. or scale. that is enlarged through the eyepiece to measure this light. The values on the scale have been established to evaluate the DEF

The Refractometer is a portable. precision. optical instrument used for measuring the Diesel Exhaust Fluid (DEF) concentration. When a liquid sample is placed on the prism. the light passing through it is bent. The more concentrated the liquid. the more the light will bend. The Refractometer contains a reticle. or scale. that is enlarged through the eyepiece to measure this light. The values on the scale have been established to evaluate the DEF condition. EPA regulations require all diesel engines manufactured on or after January 1. 2010 to meet lowered NOx emissions standards. Most heavy duty engine (Class 7-8 trucks) manufacturers. have chosen to utilize SCR.

Features

  • The refractometer is a portable precision optical instrument used for measuring the diesel exhaust fluid concentration

  • When a liquid sample is placed on the prism the light passing through it is bent and the more concentrated the liquid the more the light will bend

  • The refractometer contains a reticle or scale that is enlarged through the eyepiece to measure this light and the values on the scale have been established to evaluate the DEF condition

  • EPA regulations require all diesel engines manufactured on or after January 1 2010 to meet lowered NOx emissions standards

  • Most heavy duty engine manufacturers have chosen to utilize SCR including Detroit Diesel DD13 DD15 DD16 Cummins ISX line PACCAR and Volvo-Mack

Specifications

Brand Name: OTC

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 73975641100

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 16 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
G
Verified Purchase
Greg
Battle Creek, US
★★★★★ 5
Best Oil on the Market
Size: 5 L
I’ve used this and only this in my 15 Scion FRS since I bought it . I used to change it every 5k but I retired and now it’s a once a year oil change with less than 5k per year. The car has never had any issues with this oil . Since NASCAR changes oil in the cars every 500 miles I don’t whine about changing it once a year. $40 for oil is better than $10k for another built motor
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
B
Verified Purchase
Bill
San Leandro, US
★★★★★ 5
Satisfied!
Size: 5 L
I absolutely love this product—I've already used it multiple times. The price is affordable, too. Thank you to the seller! Five stars!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
Y
Verified Purchase
Yesuaini99
West Palm Beach, US
★★★★★ 5
I just got it changed about 30 min ago and the engine sounds like a little cat
Size: 5 L
My Audi factory setting says I should use VW 508.00. Somewhere online it says 5w-40. It's 82000 miles and I decided to give it a shot to go 0W-20 which is what VW508.00 is. I just got it changed about 30 min ago and the engine sounds like a little cat. The gas pedal feel is very smooth, there's definitely less resistance when pushing forward. In Sports mode driving, the engine is not as loud and the lag or drag is noticeably less. And when it hits 100k, I will do a engine flush to see if I can get further improvements. So far, I really love Liqui Moly. I used to use it on my S500 and it was very smooth. A little more money goes a long way! Don't settle for less for your German cars. Update: I just did another 1000 miles in a week to Vegas and back. The fuel economy improved about 20%. The power increase is amazing. I could notice when I am going fast, the sustained speed at high speed is easy and continuous, It doesn't just hit a snag when your foot is off the pedal. And the engine is definitely a lot quieter and smoother. I am amazed at the overall improvement after using this oil. No other oil will do from now on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2018
T
Verified Purchase
Tv
Pawtucket, US
★★★★★ 5
Engine Oil
Size: 5 L
Perfect for Nissan Altima 2018 . Huge difference .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
J
Verified Purchase
Jorge mayre
Natrona Heights, US
★★★★★ 5
Liqui moly
Size: 1 L
Great product makes the engine work very quiet
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025

recommand products