Lexus Spark Plugs, Differential fluid and Coolant Replacement | ASMR |

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Here's how to replace the Differential fluid, Coolant and Spark Plugs on a Lexus GS350 and IS250 and IS350.

This is an ASMR style video where you can watch and listen to me work!

Differential fluid is accessed with a fill and drain port on the passenger side of the unit. Using 10 mm hex, the fill port is first opened and then the drain port to remove fluid. Once the magnets are cleaned, the drain plug is reinstalled. A fluid pump is used to pump 2L of 75W90 gear oil into the fill port of the differential until it starts dripping out. Tighten the plugs and clean excess oil.

The coolant can be changed by draining and filling the radiator and overflow reservoir. The reservoir should be unbolted and washed out to remove settled debris. The radiator petcock valve is located on the bottom and can be reached from inside the engine bay, in front of the engine, opposite the crankshaft pulley. There's already a hole in the plastic cover below so there's no need to go underneath the vehicle. Use a Toyota pink compatible fluid that is borate and silicate free. Draining the engine block and heater core is optional for full coolant replacement. Bleed the cooling system with the radiator cap off and warm up the engine to allow air to burp out the top.

Replacing spark plugs is much easier on this RWD longitudinally mounted 2GR engine, compared to its FWD counterparts, since the intake does not need to be removed. The wiring harness needs to be freed and then the ignition coils carefully removed. On the passenger side the intake tube is removed to access coils and plugs. The spark plug torque is 16 ft-lb with no anti-seize on the threads. Use Denso Iridium spark plugs since it is OEM and best for this engine. This is also a good time to change the air filter and clean the throttle body. Throttle response has definitely improved after this service.

Skip to section in this video:
0:00 Introduction
0:27 Differential Fluid
1:48 Coolant
3:24 Spark plugs

Here's where you can find the fluids and tools used in this video:

10mm Hex socket:
(Canada)
(US)

75W90 Gear Oil:
(Canada)
(US)

Fluid Transfer Pump:
(Canada)
(US)

Toyota Coolant:
(Canada)
(US)

Coolant Funnel Bleeder:
(Canada)
(US)

Spark Plug Socket:
(Canada)
(US)

Flex head ratchet:
(Canada)
(US)

6" 3/8" extension:
(Canada)
(US)

Denso 3473 Iridium Spark plugs:
(Canada)
(US)

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This is the Camera I use:
(US)
(Canada)

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