<\/span><\/h2>\nyour vehicle has reached a higher mileage and experiences increased wear and tear<\/strong>, requiring better lubrication and protection<\/strong> provided by a synthetic oil; driving conditions and engine type<\/strong> however, always consult your vehicle manufacturer’s recommendations<\/strong><\/p>\nSevere driving conditions like frequent stop-and-go traffic, towing heavy loads, or extreme temperatures<\/strong> can necessitate a higher quality oil<\/p>\n<\/span>Engine Oil upgrading problems thicker (dynamic thicker) multigrade vs monograde<\/span><\/h2>\n <\/p>\n
<\/span>1. Cold Start Problems due to chnage lower number w<\/strong><\/span><\/h3>\n\n- Thicker Oil in Cold Temperatures<\/strong>: High-viscosity oil becomes even thicker in cold weather, leading to sluggish engine starts.<\/li>\n
- Delayed Lubrication<\/strong>: The oil takes longer to flow through the engine, which increases wear on moving parts during startup.<\/li>\n<\/ul>\n
if manufacurer recommends 10w-50 don;t go for 20w-50 you may go for 5w-50 no prbolem for cold starts.<\/p>\n
<\/span>2. Increased Engine Wear<\/strong><\/span><\/h3>\n\n- Poor Flow at High Viscosity<\/strong>: The oil might not reach critical areas quickly enough, causing increased friction and wear.<\/li>\n
- Reduced Hydraulic Performance<\/strong>: In hydraulic lifters or variable valve timing systems, thicker oil can impair operation, leading to noise and poor performance.<\/li>\n<\/ul>\n
![\"High](\"https:\/\/in.rajuginni.com\/gear\/wp-content\/uploads\/sites\/3\/2024\/11\/High-viscosity-VS-low-viscosity-of-engine-oil.jpg\")
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<\/span>3. Reduced Fuel Efficiency<\/strong><\/span><\/h3>\n\n- Higher Internal Resistance<\/strong>: High-viscosity oil creates more drag on the engine’s moving parts, which increases fuel consumption.<\/li>\n<\/ul>\n
<\/span>4. Overheating<\/strong><\/span><\/h3>\n\n- Inadequate Heat Transfer<\/strong>: Thick oil can hinder the engine’s ability to dissipate heat, leading to higher operating temperatures and potential damage.<\/li>\n<\/ul>\n
<\/span>5. Stress on Oil Pump<\/strong><\/span><\/h3>\n\n- Strain on Oil Pump<\/strong>: The oil pump has to work harder to circulate high-viscosity oil<\/strong>, which could lead to premature pump failure.<\/li>\n<\/ul>\n
if oil pump broken no oil circulation in the engine leading to engine seize.<\/p>\n
<\/span>6. Sludge and Deposits<\/strong><\/span><\/h3>\n\n- Inability to Remove Contaminants<\/strong>: High-viscosity oil may struggle to suspend contaminants effectively, increasing sludge formation and deposits.<\/li>\n<\/ul>\n
<\/span>7. Warranty Issues<\/strong><\/span><\/h3>\n\n- Manufacturer Recommendations Ignored<\/strong>: Using an oil grade outside the manufacturer\u2019s specifications can void the warranty.<\/li>\n<\/ul>\n
\n<\/span>When is High-Viscosity Oil Suitable?<\/strong><\/span><\/h3>\n\n- High Mileage Engines<\/strong>: Older engines with worn parts may benefit from thicker oil to maintain proper sealing and reduce oil consumption.<\/li>\n
- High Temperatures<\/strong>: Engines operating in extremely hot climates may require higher viscosity oil to maintain performance and prevent thinning.<\/li>\n<\/ul>\n
<\/span>How to Avoid Problems<\/strong><\/span><\/h3>\n\n- Always use the oil grade recommended in your vehicle’s owner\u2019s manual.<\/li>\n
- Adjust the oil grade only if an expert mechanic suggests it for specific reasons, such as the engine’s condition or environment.<\/li>\n<\/ul>\n
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<\/span>Engine oil HTHS (High Temperature High Shear) Test\u00a0 150 c chart<\/span><\/h2>\nHTHS\u00a0measures the viscosity (resistance to flow) of an engine lubricant at elevated temperatures under constant shear.<\/b><\/p>\n
Low HTHS oils: the art of balancing fuel efficiency and engine protection<\/strong><\/p>\n\n- A lubricant with low HTHS viscosity improves fuel efficiency.<\/li>\n
- A lubricant with high HTHS viscosity offers better protection<\/strong> for engine parts.<\/li>\n
- The engine type: Low HTHS oil in an engine designed for high HTHS oil can cause damage.<\/li>\n<\/ul>\n
<\/span>HTHS test 10w50 oil chart<\/span><\/h2>\n![\"hhts](\"https:\/\/in.rajuginni.com\/gear\/wp-content\/uploads\/sites\/3\/2024\/11\/hhts-test-engine-oil.jpg\")
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The Valvoline SynPower specification sheet below, has a viscosity of 9.4 centistokes at 100c. Which neatly demonstrates a precisely blended oil.<\/p>\n
Kinematic viscosity is measured in centistokes cSt (or mm2\/s).<\/p>\n
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What it measures
\nThe HTHS test measures a lubricant’s viscosity, or resistance to flow, at 150\u00b0C and a shear rate of 1,000,000 s-1. These conditions simulate the high speeds and narrow tolerances between moving parts in a hot engine.
\nWhat it indicates
\nA lower HTHS number indicates lower resistanc<\/strong>e to flow and better anticipated fuel efficiency.
\nHow it’s used
\nThe HTHS test measures how well a lubricant can run efficiently between the narrow openings of fast-moving engine parts, such as the piston<\/strong> ring and lining, valve<\/strong> train, and gearwheel<\/strong> contact points.<\/p>\n<\/span>multigrade and monograde engine oil<\/span><\/h2>\nmonograde engine oils do not suffer from shear<\/strong> as there are no viscosity index<\/strong> improvers in the oil.<\/p>\n![\"VISCOSITY](\"https:\/\/in.rajuginni.com\/gear\/wp-content\/uploads\/sites\/3\/2024\/11\/VISCOSITY-GRADES-of-engine-Oil.jpg\")
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A multigrade oil gives you the best of both worlds by maintaining its performance at high and low temperatures.<\/strong><\/p>\n<\/span>viscosity index improvers and viscocity chart\u00a0 graphical representation showing how the viscosity of a fluid changes with temperature<\/span><\/h3>\n