Belt squeak could be a drive belt tensioner, easy way to diagnose is spray some WD40 or similar on into the tensioner bearing to see if the noise disappears. Replace it if it does.
Pros: easy to diagnose
Cons: belt squeak
Reviews of WD-40 parts For Business
Average Rating
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The manufacturer's average rating is calculated based on ratings of all its spare parts. It determines the place in the manufacturer ranking
4.5
Manufacturer Ranking
-
4
Spare Parts
4
Country
UK
Spare Parts
Comparisons
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I changed the glow plugs on my 2001 A6 and I'm fairly sure they have never been done.
I was in a position where I didn't need to use it for weeks so I just took my time with it - soak them up with WD40 for days at a time and slowly loosen them up. Didn't break any but I had to have patience to leave them overnight to soak when they were feeling tight.
Pros: took time, didn't break
Cons: feeling tight
Vehicle:
Audi A6
I did that with my license plate screws, let it sit overnight and they came right out
Pros: screws came right out
They've been screeching like banshees when they move. I washed the blades down with a cloth and WD40. They're back to quiet and I won't drive off a cliff due to the uncomfortable noise any more.
Pros: back to quiet
Cons: screeching like banshees
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Owner reviews of WD-40 products
The WD-40 brand is registered in UK. Official website is not specified yet.
In March 2026, PartReview recorded 4 reviews across 4 parts by WD-40. Average rating — 4.5 out of 5.
WD-40 is not yet in the PartReview manufacturers ranking due to insufficient reviews.
Popular WD-40 parts
The most popular WD-40 products on PartReview:
- Glow plug WD-40 - 1 review. PR Score — not available yet, average rating — 4.
- Penetrating oil WD-40 - 1 review. PR Score — not available yet, average rating — 5.
- Wiper blades WD-40 - 1 review. PR Score — not available yet, average rating — 5.
- Drive belt tensioner WD-40 - 1 review. PR Score — not available yet, average rating — 4.
Most owner reviews about WD-40 parts are collected on these pages.
Top-rated WD-40 parts
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Comparisons of WD-40 parts
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