Shopping cart

Your cart is empty

Add performance parts, kits, or accessories to get started.

View cart
Subtotal:$0.00

RAMBO REPAIR: Fixing a Sea-Doo RXT-X 300 Oil Cooler on a Budget!

They drew first oil... so Ernesto Calas had to go full Rambo! 💥🛠️ In this episode of Calas World, we are tackling a messy Sea-Doo RXT-X 300 oil cooler and temp sensor failure. Instead of paying...

Calas Performance
Written by
Calas Performance

Published
September 27, 2026

Read time
2 min

They drew first oil… so Ernesto Calas had to go full Rambo! 💥🛠️

In this episode of Calas World, we are tackling a messy Sea-Doo RXT-X 300 oil cooler and temp sensor failure. Instead of paying massive dealership prices, Ernesto breaks out the heavy artillery (and a giant pipe wrench) to show you how to get this budget repair done right. Whether you're dealing with oil in your hull or a faulty temp sensor, this tactical, step-by-step assault on the RXT-X engine bay will get you back on the water without breaking the bank.

If you laughed, learned something, or just want to see Ernesto in a black bandana again, smash that LIKE button and SUBSCRIBE for more high-octane builds, drag racing, and DIY repairs!

🎬 Video Chapters: 0:00 – The Problem: Sea-Doo RXT-X 300 Oil Cooler Failure 1:15 – Rambo Gets Ready (The Budget Parts List) 9:20 – Removing the Old Oil Temp Sensor & Cooler 8:20 – Installing the New Replacement cooler on a budget. 16:11 – The Test Fire & Final Checks 16:32 – Rambo Test rides the Sea-Doo RXT-X 300 32:53 – Mission Accomplished (Outro) 33:39 – Bloopers and Out-takes

Be sure to follow me on IG – https://www.instagram.com/calasperformance FB – https://www.facebook.com/CalasPerformance

Check out my website for the Calas Performance PWC parts for Sea-Doo and Yamaha Calas Performance https://www.calasperformance.com/

Check out DDR Performance https://ddrperformance.com Check out the fizzle factory https://www.fizzlefactory.com/

Calas Tunes for Stages 1, 2 and 3 NOW AVAILABLE with Riva Map Tuner

Be sure to check out RIVA RACING at https://rivaracing.com/

Calas Cam and Springs and retainers are Now Available at https://www.calasperformance.com/

Watch on YouTube

Shop the system

Find parts for your build

Use the Calas shop and PWC finder to narrow parts, kits, and upgrades by brand, stage, and fitment.

Share:
Calas Performance
About the Author

Calas Performance

Calas Performance

Calas Performance shares practical PWC parts guidance, fitment notes, performance insights, and build support for riders who want to order with confidence.

Need Help?

Talk to the Team

Have a fitment question or need help planning a build? Reach out and get a straight answer from people who actually build these machines.

Top
Secret Link