NHTSA ID Number: 10243495
Manufacturer Communication Number: SSM 51917
Summary
Some 2020-2021 Explorer/Aviator/Police Interceptor Utility vehicles equipped with AWD may exhibit a binding or shudder sensation while turning and/or while accelerating from low speeds. The concern may also be described as a grinding and/or chatter noise. If the Workshop Manual (WSM) leads to replacement of the rear axle, inspect the differential for damage and differential fluid for metallic chunks in the fluid. Note that some metallic flake in the fluid and/or discoloration is normal and the rear axle should not be replaced for it. If no damage is found to the rear differential, it is not recommended to replace the rear axle assembly. Refer to WSM Symptom Charts (Section 308-07A for 2020 model year; Section 307-07A for 2021 model year) for diagnosis of the transfer case instead.
6 Affected Products
Vehicles
1 Associated Document
Manufacturer Communications
SSM 51917
2020-2021 Explorer/Aviator/Police Interceptor Utility – All Wheel Drive (AWD) – Binding/Shudders/Grinding/Chatter On Turns And/Or On Acceleration At Low Speeds
NHTSA ID Number: 10240575
Manufacturer Communication Number: SSM 51821
Summary
Some 2020-2021 Explorer/Aviator/Police Interceptor Utility vehicles equipped with AWD may exhibit a binding or shudder sensation while turning and/or while accelerating from low speeds. The concern may also be described as a grinding and/or chatter noise. If the Workshop Manual (WSM) leads to replacement of the rear axle, inspect the differential for damage and differential fluid for metallic chunks in the fluid. Note that some metallic flake in the fluid and/or discoloration is normal and the rear axle should not be replaced for it. If no damage is found to the rear differential, it is not recommended to replace the rear axle assembly. Instead, refer to the Symptom Charts in WSM, Section 307-07A for further diagnosis of the transfer case.
1 Associated Document
Manufacturer Communications
SSM 51821 2020-2021 Explorer/Aviator/Police Interceptor Utility – All Wheel Drive (AWD) – Binding/Shudders/Grinding/Chatter On Turns And/Or On Acceleration At Low Speeds
NHTSA ID Number: 10205444
Manufacturer Communication Number: SSM 50321
Summary
Some 2020-2021 Explorer/Aviator/Police Interceptor Utility vehicles equipped with AWD may exhibit a binding or shudder sensation while turning and/or while accelerating from low speeds. The concern may also be described as a grinding and/or chatter noise. If the Workshop Manual (WSM) leads to replacement of the rear axle, inspect the differential for damage and differential fluid for metallic chunks in the fluid. Note that some metallic flake in the fluid and/or discoloration is normal and the rear axle should not be replaced for it. If no damage is found to the rear differential, it is not recommended to replace the rear axle assembly. Instead, refer to the Symptom Charts in WSM, Section 308-07 for further diagnosis of the transfer case.
1 Associated Document
Manufacturer Communications
SSM 50321 – 2020-2021 Explorer/Aviator/Police Interceptor Utility – All Wheel Drive (AWD) -Binding/Shudders/Grinding/Chatter On Turns And/Or On Acceleration At Low Speeds
- SATISFIES REQUIREMENTS - for gear oil viscosity of SAE 75W80, 75W, 80W and 85W, as well as SAE 30 and SAE 10W30 motor oil
- APPLICATIONS - include differential oil, final drive oil, gear oil and transfer case fluid, this product is not designed for use in most manual transmissions or transaxles with synchronizers, as extreme slipperiness may cause shifting problems
- CONTAINS - additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required, known formerly as LightWeight Gear Oil
- POPULAR GEAR OIL FOR - in many late model BMW, Dodge, Ford
, GM, Jeep, Lexus, Mercedes-Benz, Ram, Toyota, also popular in many Formula racing transaxles, including Hewland LD-200 and FTR sequential - WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises
- FlexFill squeezable pouch releases 2X more fluid with less effort for 3X faster filling vs. traditional bottle packaging
- Contains limited slip for optimal performance of the clutch pack, while also delivering 30% better protection against towing and heavy loads and 1.5X better gear wear protection
- Advanced full synthetic helps prevent noise and reduce chattering, while protecting gear teeth from wearing out prematurely
- High and low temperature protection ranges from -50F to 300F degrees for cold temperature fluidity and high temperature performance
- Fights rust and corrosion with corrosion inhibitors and safeguards against impurities, oxidation and thermal breakdown
- SATISFIES REQUIREMENTS - for gear oil viscosity of SAE 75W80, 75W, 80W and 85W, as well as SAE 30 and SAE 10W30 motor oil
- APPLICATIONS - include differential oil, final drive oil, gear oil and transfer case fluid, this product is not designed for use in most manual transmissions or transaxles with synchronizers, as extreme slipperiness may cause shifting problems
- CONTAINS - additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required, known formerly as LightWeight Gear Oil
- POPULAR GEAR OIL FOR - in many late model BMW, Dodge, Ford, GM, Jeep, Lexus, Mercedes-Benz, Ram, Toyota, also popular in many Formula racing transaxles, including Hewland LD-200 and FTR sequential
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises
- SATISFIES REQUIREMENTS - for gear oil viscosity of SAE 75W80, 75W, 80W and 85W, as well as SAE 30 and SAE 10W30 motor oil
- APPLICATIONS - include differential oil, final drive oil, gear oil and transfer case fluid, this product is not designed for use in most manual transmissions or transaxles with synchronizers, as extreme slipperiness may cause shifting problems
- CONTAINS - additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required, known formerly as LightWeight Gear Oil
- POPULAR GEAR OIL FOR - in many late model BMW, Dodge, Ford, GM, Jeep, Lexus, Mercedes-Benz, Ram, Toyota, also popular in many Formula racing transaxles, including Hewland LD-200 and FTR sequential
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises
- DIRECT FILL FOR BMW, JEEP, RAM TRUCKS, DODGE, MERCEDES BENZ & MORE — Covers all 75W-85 GL-5 applications for differentials and hypoid gear limited slip systems. Its a direct replacement for BMW G5 Hypoid 75W85, SAF-EH MOD LV, Stellantis MS-A0450 (Mopar LL Hypoid, P/N 68083381AC), Ford
WSS-M2C942-A and XY-75W85-QL. - OUTSTANDING PERFORMANCE - Stops the chatter, shudder, and stick-slip you hear on tight low-speed turns in clutch-type LSDs. Excellent protection of hypoid ring-and-pinion gearsets under sustained high-torque loading such as towing, off-road, high acceleration.
- API GL-5, MT-1 & SAE J2360 — Full synthetic. Handles hypoid shock loading, towing, and sustained high-torque heat without shearing out of grade or forming deposits.
- ALSO COVERS ASIAN & EUROPEAN AXLES — Toyota/Lexus Gear Oil LT/LX (08885-02506, -02606, -81060), Honda/Acura HGO-1, Nissan KDL38-75801P, Mazda K020-01-SG1, GM 92184900, Mercedes-Benz 235.7 and BMW OEM Fluid G5
- COLD-START PROTECTION TO -50°F — Flows on the first turn in winter, holds film strength at differential operating temperature. Protects gears and bearings across the full range.
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