--- product_id: 92114408 title: "Hydro Valve Additive, 3 x 300 ml" brand: "liqui moly" price: "$101.51" currency: USD in_stock: false reviews_count: 13 url: https://www.desertcart.us/products/92114408-hydro-valve-additive-3-x-300-ml store_origin: US region: United States of America --- # Reduces hydraulic tappet noise Cleans oil boreholes & channels Optimizes hydraulic tappet function Hydro Valve Additive, 3 x 300 ml **Brand:** liqui moly **Price:** $101.51 **Availability:** ❌ Out of Stock ## Summary > ⚙️ Keep your engine whisper-quiet and running like new — don’t let noise hold you back! ## Quick Answers - **What is this?** Hydro Valve Additive, 3 x 300 ml by liqui moly - **How much does it cost?** $101.51 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/92114408-hydro-valve-additive-3-x-300-ml) ## Best For - liqui moly enthusiasts ## Why This Product - Trusted liqui moly brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Deep Clean Power:** Cleans oil boreholes and channels to maintain peak engine performance. - • **Triple Pack Value:** Three 300 ml cans provide enough additive for multiple oil changes, ensuring long-term engine care. - • **Boosts Safety & Comfort:** Enhances operational safety and driving comfort by optimizing hydraulic tappet function. - • **Universal Compatibility:** Works seamlessly with most petrol and diesel engine oils, including turbo and catalytic converters. - • **Silent Engine, Smooth Drive:** Effectively reduces annoying hydraulic tappet noise for a quieter ride. ## Overview Liqui Moly Hydro Valve Additive is a premium hydraulic tappet additive designed to reduce noise, clean oil channels, and optimize tappet function. Suitable for most petrol and diesel engines (including turbo and catalytic converters), this triple pack of 300 ml cans ensures enhanced engine safety and driving comfort with every use. ## Description Reduces hydraulic tappet noise. Oil boreholes and channels in the oil circuit are cleaned. Ensures the optimal function of the hydraulic tappets. Increases the operational safety and driving comfort of the vehicle. Suitable for most commercially available engine oils in petrol and diesel engines with and without diesel particulate filter (DPF). Tested for turbo and catalytic converters. Can content is sufficient for up to 6 litres of engine oil. Not suitable for motorcycles with a wet clutch. - Content: 300 ml. ## Features - Liqui Moly 1009 hydraulic tappet additive, 300 ml, pack of 3. - Includes: hydraulic tappet additive, pack of 3. - - We combine premium brands and tailor them perfectly to the vehicle. - This service kit has been designed according to the needs of our customers. ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | LIQUI MOLY | | Brand | Liqui Moly | | Package Dimensions | 20.1 x 16.4 x 6.3 cm; 970.69 g | | Item model number | 31015621 1009 | | Manufacturer part number | 31015621 1009 | | Item Weight | 971 g | ## Images ![Hydro Valve Additive, 3 x 300 ml - Image 1](https://m.media-amazon.com/images/I/61GiE0ZVNES.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Really good product if you understand what you’re doing *by L***E on Reviewed in the United Kingdom on 4 January 2021* Vortec 6L V8 lifters started to make some noise especially during cold mornings and it was getting louder and louder fast. Tried to flush the engine twice but no help although engine got bit smoother. Throwed this in between the oil change and the noise completely disappeared fairly quickly. Now even that the truck is sitting 3 weeks in a weather between 0 to -15 in C (32 to 5 in F) there’s absolutely no noise in cold start while the engine is warming up. I’d still recommend the engine flush or several of them as the noise is usually about the poor oil flow (dirt all over the place) and dirty & sticky lifter rods. If this does not help, manually clean the rods and inspect the rockers. Bit time consuming but fairly simple job, tons of YouTube videos available for sure. Act fast as more noise more damage eventually.Also understand what you’ll be doing. My V8 is a 2003 engine that is a) in a good shape (piston pressures solid 13 bar) and b) the engine does not have anything fancy in it – just simple V8 (no variable this and that, no eco throttle pistons to save fuel etc.). As the magic of these is the change the oil structure from viscosity point of view you can actually do more harm than good with your engine especially with the newer ones. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars My review *by D***N on Reviewed in the United Kingdom on 28 October 2023* This actually does a very good job of making those hydraulic tappets quieter .Worked for me.. ### ⭐⭐⭐⭐ 4.0 out of 5 stars Ok *by I***S on Reviewed in the United Kingdom on 11 November 2021* Ok --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/92114408-hydro-valve-additive-3-x-300-ml](https://www.desertcart.us/products/92114408-hydro-valve-additive-3-x-300-ml) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-06-01*