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When To Change Your Car’s Air Filter And How To Do It Without A Mechanic

The Mechanic Doctor – Resources for Amateur and Pro Auto Mechanics
We often pay meticulous attention to the maintenance of our cars – oil changes, tire rotations, and fluid top-ups. However,
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Galvanic corrosion

What is Galvanic corrosion? Galvanic corrosion occurs when two or more dissimilar metals are in physical contact with one another or in contact with a conductive liquid (electrolyte). In simple terms, Galvanic corrosion is the movement of electrons and ions from one metal to the other. Galvanic corrosion occurs in all areas of a vehicle You’ll find galvanic corrosion in all areas of a vehicle; suspension components, body panels, steering, bearings—anywhere where two dissimilar metals touch or can come in contact with a conductive liquid like salt water from the … Read More
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Steps to replace a water pump

How to replace a water pump Replacing a water pump is fairly easy if it’s accessible. But there are a few things to keep in mind when replacing a water pump. Never rotate a dry water pump It seems like everyone wants to test a new water pump by rotating the pump shaft right out of the box. DON’T DO IT! Rotating a dry water pump can damage the seals. They’re designed to run in coolant and can’t handle dry rotate. Flush radiator and cooling system before removing the old … Read More
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Viscosity Index Improver

What is Viscosity Index Improver Multi-viscosity motor oil is formulated with thin base oil which is fortified with viscosity index improver (VII) additives. The base oil is thin enough to pump and flow well at cold temperatures and the VII allows the oil to thin less when hot than it normally would without the VII additive. How does VII work? VII additive is complex polymer molecule that is coiled and spherical in shape at cool/cold temperatures. As the polymer heats up and is pressurized the molecule deforms into a long … Read More
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Subaru gas smell, oil smell in cabin

Fix Subaru gas smell, oil smell in cabin Subaru has issued a service bulletin and new PCV hose assembly to address a problem where owners have a gas smell or hot oil smell in the cabin. The Subaru gas smell is described by owners as a hot rubber, raw fuel or hot oil type smell coming into the cabin. Cause of Subaru gas smell Subaru has determined thet the PCV hose assembly is the cause of the problem and has issued a redesigned PCV hose assembly for the vehicles listed … Read More
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Subaru knocking sound, squeaking sound from stabilizer bushing

Fix for Subaru knocking sound over bumps, squeaking sound from stabilizer bushing Subaru has issued a service bulletin #05-88-21R to address a Subaru knocking sound, squeaking sound from the stabilizer bushings. The bulletin applies to the vehicles listed below. Subaru has made a design change to the front stabilizer bushings by enhancing the the bushing material to address the knocking and squealing sounds when driving on rough roads. Vehicles covered by Subaru service bulletin #05-88-21R 2014-22MY Forester 2013-21MY Crosstrek 2015-21MY WRX 2015-2019MY Legacy 2015-22MY Outback 2019-22MY Ascent 2017-22MY Impreza New … Read More
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