What's good for diesel engine 6.7

Dura Lube also makes a Diesel version which works best for Diesel Catalytic and Exhaust systems.

Can I combine with Garantee to pass

It all depends. Are you trying to pass an emissions test? It may take several times with several different bottles to clean out. Also it depends on how bad your catalytic is. This is not a miracle worker if you have a bad cat. It does a very good job on cats that are not completely packed. Your question is too vague

I have two vehicles, one with 80k miles and one with 110k miles. They both run fine with no check engine lights. Is this a safe preventative cleaning?

Yes, that would be a good idea I do the same for mine . It’s a cheap piece of mind .

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♻️ Drive cleaner, save smarter — your emissions MVP!

ENGINE LIGHT SAVIOR - Use before replacing costly catalytic converters to save big 💸
LONG LASTING IMPACT - One 16oz bottle treats up to 5,000 miles or 3 months of driving ⏳
EMISSION GAME CHANGER - Helps your vehicle pass strict emission tests with flying colors ✅
ECO PERFORMANCE BOOSTER - Reduces phosphorus & zinc buildup for cleaner, smoother exhaust flow 🌿
UNIVERSAL COMPATIBILITY - Works seamlessly with all engine types—no guesswork needed 🔧

Dura Lube HL-402409 is a powerful 16 fl oz catalytic and emissions system cleaner designed to protect and optimize your vehicle’s catalytic converter. It reduces harmful oil elements and mineral buildup, improves fuel economy, and helps your car pass emissions tests. Compatible with all engines, one treatment lasts up to 5,000 miles, making it an essential eco-friendly upgrade for any driver.

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Manufacturer	Dura Lube
Brand	Dura Lube
Model	Dura Lube severe catalytic and exhaust discharge testing
Product Dimensions	6.65 x 6.65 x 23.16 cm; 453.59 g
Item model number	HL-402409 PDQ3
Special Features	Discharge
Item Dimensions L x W x H	6.7 x 6.7 x 23.2 cm
Color	orange (amber)
Item Weight	453 g

Dura Lube HL-402409 Powerful Catalyst/Emissions Test Catalytic Cleaner, 16 fl oz, 1 Pack

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