The reason that I don't prefill oil filters:    • Customer States: YOU Messed Up my Die...  
Check out this Cadillac with NO brakes! Huge fluid leak!    • NO BRAKES! Unsafe! Customer Declines ...  

Here's the Amazon link to the brake caliper tool: https://amzn.to/3klYmsx

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Also, I personally use or have used the products featured in my links and only recommended them if I feel they are of good quality.