The Shocking Oil Film Strength Test Using Royal Purple’s Synfilm

Did Royal Purple ruin my BMW engine? Royal Purple Part 3

Pennzoil Platinum Engine oil VS Royal purple HPS Full synthetic

Castrol Edge 0W40 vs Valvoline SynPower 0W40 Engine Oil Test 100°C

Is Royal Purple better than Amsoil? Let's find out!

New HPS High Film Strength Street Motor Oil

Synthetic Oil vs Regular Oil with Royal Purple @SEMA

Royal Purple HPS 10W40 Motor oil test Piotr Tester

Royal Purple Bearing Demo

Is Amazon Basics better than Liqui Moly? Let's find out!

Can MotorKote survive the water test? Let's find out!

Will Thinner Oils Damage Your Engine?

Prova Royal Purple HPS 5W30 + RX-8898 Oil System Cleaner

Addressing your frequently asked Royal Purple questions. Will Royal Purple actually ruin engines??

How Bad Is OEM Motor Oil? Honda vs Toyota vs ACDelco?

Best engine oil MADE IN GERMANY!!! Crushing America's best .

Bobby Likis Purple Ice | Royal Purple

How Bad Are Cheap "Diesel" Motor Oils? $14 vs $58

Why I switched from a K&N filter to Royal Purple.

Oil Test Royal Purple Vs Amsoil

Amsoil vs Mobil 1 motor oil championship!