USA SHIPPING: We may occasionally use a different shipping carrier than the one selected at checkout to improve delivery speed, protect fragile items, or help reduce overall shipping and handling costs, including packaging and processing fees
INTERNATIONAL SHIPPING:
International shipping costs are calculated at checkout; however, these charges do not include any additional customs duties, taxes, brokerage, or tariff fees that may be applied by your country upon import. These fees are not controlled by us and can vary widely based on your location and local regulations.
OTHER COUNTRIES: Please search for your government's "estimated duty and taxes" calculator.
We strongly recommend that you contact your local customs office or postal service in advance to understand what import fees may apply before placing your order. This will help ensure a smooth delivery and avoid unexpected charges when your package arrives.
RETURN POLICIES
GENERAL RETURN POLICY: Please review the installation guide or video before purchasing, and confirm the pressure and return port locations for your engine. We're happy to provide guidance if needed. Returns are not accepted for buyer’s remorse or if the kit doesn’t match your engine model, so please double-check compatibility before ordering. If you encounter any issues, contact us — we’re committed to finding a solution.
DAMAGED PRODUCT RETURNS: All products are inspected before shipping. If your product arrives damaged, please report it with photos within 7 business days of delivery. Only unused, damaged items in their original condition are eligible for replacement or refund. If a product is confirmed to be defective or damaged, you can choose between a replacement or full refund after inspection.
CANCELLATIONS AND OTHER REFUND POLICIES: In rare cases where a product qualifies for a return (outside of damage on arrival and within 30 days of delivery), a refund will be issued minus return shipping costs and the Shopify transaction fee (2.4%-2.5% + 30¢). Although we *may* offer free shipping during promotions, the original shipping cost will also be deducted from your refund.
Your satisfaction is important to us! If you have any questions or need assistance, please contact us at support@InsaneDiesel.com.
Let customers speak for us
from 170 reviews
A breeze to install
A breeze to install. I’m looking forward to clean oil!
I drive and installed the extreme 2 system on a 2022 Silverado 3500 with the L5P Duramax. It is a pretty straight foward install for the average person. I ended up making ny own bracket to install in the engine compartment and quite happy with the way it looks and solidly mounts. I didnt order the engine compartment mount thinking the frame mount was going to be OK. I am sure it is, but after climbing under my truck, I wanted the ease of changing the filter from the top, After driviving my truck 200 miles last weekend the oil still looks very clean and new. Normally after 25 miles it is very dark. I am confident in thier product and do reccomend it.
Product is build really nicely and went offairly easy. I wish the elbow off the oil pressure valve was assembled already. It’s the only fitting without a torque measurement and had some small leaking. Was a very small issue but did have to drain the oil to tighten it. Overall I’m 100%satisfied with the product! Would recommend and will most likely be retrofitting on other toys!
Straight forward product and install. I’ve ran amsoil systems on several trucks previously and the testimonials on this system pushed me to make the switch. I plan on running one on my wife’s diesel BMW as well and look forward to the results of first analysis.
This is the first time that we purchased a bypass oil filter for any of our company vehicles
This is the first time that we purchased a bypass oil filter for any of our company vehicles. After I do an oil analysis I will probably install on the rest of them.
Kit arrived quickly and was boxed securely and packaged neatly. Installation was straightforward and seamless. Parts are all of the highest quality and fitment was better than OEM. Great product and company.
So I ordered the wrong kit and it wouldn't work on my truck
So I ordered the wrong kit and it wouldn't work on my truck. I called them up and they showed me were I ordered the wrong kit and then pulled the right fittings for my truck and shipped them to me. Great CS.
We all want our diesel engine to last forever. I've used bypass filters in gas engines before with very good results on every oil analysis, extending the oil change intervals to 50K miles and more. And I know that oil is working even harder on modern diesel engines. The install was very straightforward. The most difficult part was installing the fittings on the hose but using a frill and a 3/4 socket made it very easy. There is a tutorial on this using oil to help screwing the swiveling lockers just right. I'm very happy with the result. Every installation is different since this is a third party addon but I found the perfect spot even if the engine bay was already crowded with an ARB air compressor among other things. Thank you Insane Diesel for a great product! I'm looking forward to my first oil analysis (kit ordered!) next year...
I wanted to share my positive experience with the Insane fuel additive. I've been using it with every fill-up, and I've noticed that my engine runs quieter, and my gas mileage has improved. I'm still waiting for my fuel analysis results, but the initial impact has been great.
I also got the Insane By-Pass filter last month and am currently working on getting Lorenzo oil for my Sprinter Van.
Leveraging cutting-edge technology, this system is engineered to significantly minimize emissions, achieving up to a 63% reduction during idling and a notable 20% under load. Beyond environmental advantages, it delivers marked improvements in fuel efficiency, ensuring a substantial return on investment.
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