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phoinix | Staff 5.4K Views
Mar 30, 2026 4:50 PM

$8* | 5-Oz LIQUI MOLY Valve Clean at Amazon

$8.00

$15

46% off
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Amazon [amazon.com] has 5-Oz LIQUI MOLY Valve Clean for $8.
Shipping is free with Prime or on $35+ orders.

Price
$6.99 lower (47% savings) than the list price of $14.99


*Previous Frontpage Deal at $8.00 with 35 Deal Score and 15 comments.

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0%: $8
5%: $7.60
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Community Notes
About the Poster
Amazon [amazon.com] has 5-Oz LIQUI MOLY Valve Clean for $8.
Shipping is free with Prime or on $35+ orders.

Price
$6.99 lower (47% savings) than the list price of $14.99


*Previous Frontpage Deal at $8.00 with 35 Deal Score and 15 comments.

Subscribe & Save
0%: $8
5%: $7.60
Add to next delivery [amazon.com] (with free shipping)
fillers [amazon.com]


2,000+ bought in past month

amazon.com/dp/B003U4RS1M [amazon.com]

Please report the deal if expired
My other deals

#pfpd

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6 Comments

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Mar 31, 2026 12:02 AM
4.3K Comments
Joined Apr 2015
SeanD1497Mar 31, 2026 12:02 AM
4.3K Comments

Our community has rated this post as helpful. If you agree, why not thank

Good stuff, it works.
Be aware that if you have a newer car with a direct injection engine (might say GDI somewhere), this will not clean your valves because the fuel is injected directly into the combustion chamber AFTER the valves, not into the intake manifold before the valves. It may still clean the fuel injectors but there are plenty of other options for that.
2
Mar 31, 2026 1:24 AM
175 Comments
Joined Oct 2014
kkauMar 31, 2026 1:24 AM
175 Comments
Quote from SeanD1497 View quoted comment :
Good stuff, it works.
Be aware that if you have a newer car with a direct injection engine (might say GDI somewhere), this will not clean your valves because the fuel is injected directly into the combustion chamber AFTER the valves, not into the intake manifold before the valves. It may still clean the fuel injectors but there are plenty of other options for that.
Funny when I read this cause my MazdaSpeed6 is DI and a 06. It may have been the 2nd DI engine on the market since 92.
Mar 31, 2026 1:26 AM
175 Comments
Joined Oct 2014
kkauMar 31, 2026 1:26 AM
175 Comments
Quote from SeanD1497 View quoted comment :
Good stuff, it works.
Be aware that if you have a newer car with a direct injection engine (might say GDI somewhere), this will not clean your valves because the fuel is injected directly into the combustion chamber AFTER the valves, not into the intake manifold before the valves. It may still clean the fuel injectors but there are plenty of other options for that.
Funny when I read this 'cause my MazdaSpeed6 is DI and a 06. It may have been the 2nd DI engine on the market since 92.
Apr 1, 2026 12:21 PM
412 Comments
Joined Aug 2019
OrangeApparel8487Apr 1, 2026 12:21 PM
412 Comments
Quote from kkau View quoted comment :
Funny when I read this cause my MazdaSpeed6 is DI and a 06. It may have been the 2nd DI engine on the market since 92.
yeah, hope you enjoy walnut blasting, cuz that's the only way you're getting the carbon off your valves on the MZR DISI.
Ford was kind enough to let Mazda test the direct injection system for them and let Ford learn from it.
If you haven't cleaned the valves on your MZR DISI yet....do it yesterday.
Apr 1, 2026 1:07 PM
3.3K Comments
Joined Sep 2011
E4300Apr 1, 2026 1:07 PM
3.3K Comments
Quote from OrangeApparel8487 View quoted comment :
yeah, hope you enjoy walnut blasting, cuz that's the only way you're getting the carbon off your valves on the MZR DISI.
Ford was kind enough to let Mazda test the direct injection system for them and let Ford learn from it.
If you haven't cleaned the valves on your MZR DISI yet....do it yesterday.
Modern cars trade efficiency over long term reliability. Avoid turbo, direct injection, stop/start, over 6 speed transmission, wet (oil soaked) timing belt, and displacement under 1.6L for cars over 3000 lbs,
1
5
Apr 2, 2026 8:17 PM
341 Comments
Joined Oct 2025
SiennaAlpaca1565Apr 2, 2026 8:17 PM
341 Comments
Quote from E4300 View quoted comment :

Modern cars trade efficiency over long term reliability. Avoid turbo, direct injection, stop/start, over 6 speed transmission, wet (oil soaked) timing belt, and displacement under 1.6L for cars over 3000 lbs,
I miss my six speed turbo car with paddle shifting like you wouldn't believe.
1

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