when starting a cold engine<\/strong>).<\/p>\n50 means viscoity of the engine oil at bike engine operating temparature ex: 100c<\/p>\n
or 2nd number viscosity measured at 100 degrees Celsius<\/p>\n
0W is thinnest (\u201cW\u201d stands for winter)
\n5W
\n10W
\n15W
\n20W
\n25W
\n20
\n30
\n40
\n50
\n60 is thickest<\/p>\n
For Example: 10W30<\/p>\n
This means the viscosity is at 10W when the engine is cold and 30 when the engine is hot.<\/strong><\/p>\n <\/p>\n
![\"VISCOSITY](\"https:\/\/in.rajuginni.com\/gear\/wp-content\/uploads\/sites\/3\/2024\/11\/VISCOSITY-GRADES-of-engine-Oil-1024x483.jpg\")
<\/p>\n
<\/span>Upgrading 10w30 to 10w50<\/span><\/h2>\nThicker oil clearence in cranshfit brearings makes a drag in engine performance.(some percentage*)<\/p>\n
Higher temparature makes oil thinner \/less viscoity .. more than engine operatiing temparature 100c+<\/p>\n
used 10w30 after 12 hours running in traffic clutch riding\u00a0 missing \/losing compression \/ stopping suddenly on low rpm.<\/p>\n
Some people upgraded 10w30 to 10350 there is no noticeable damage but improved smoothness heat protection.<\/strong><\/p>\n <\/p>\n
<\/span>SAE Viscosity Rating Numbers<\/span><\/h3>\n![\"SAE](\"https:\/\/in.rajuginni.com\/gear\/wp-content\/uploads\/sites\/3\/2024\/11\/SAE-Viscosity-Rating-Numbers-ratings.png\")
<\/p>\n
<\/span>Know your bike Cooloing system? (Air vs oil vs liquid cool )<\/span><\/h2>\nEngine Oil not alone cool down the engine but also other cooling systems<\/p>\n
\n- 100 cc bike mostly Air cooled<\/li>\n
- 125cc-200 AIr+Oil cooled<\/li>\n
- 150-1000cc+ : Liquid cooled<\/li>\n<\/ul>\n
![\"Hydrodynamic](\"https:\/\/in.rajuginni.com\/gear\/wp-content\/uploads\/sites\/3\/2024\/11\/Hydrodynamic-and-Boundary-Lubrication.jpg\")
<\/p>\n
<\/span>engine oil grade based on outside temperature<\/span><\/h2>\nThe SAE system classifies engine oil viscosity grades like 5W-30. The first number denotes winter\/cold flow grade – lower means easier pumping when cold. After the “W,” the second number reflects hot operating viscosity – higher indicates thicker oil that better retains film strength under heat.<\/strong><\/p>\nengine oil relation with outside temperature<\/p>\n
Viscosity index (VI):<\/strong> VI measures how much an oil’s viscosity changes with temperature.<\/strong><\/p>\nviscosity index improvers: polymer imroves viscocity of the oil.<\/strong><\/p>\nA 18\u00b0C temperature<\/strong> difference can cause a 71% drop in viscosity.<\/strong><\/p>\nWinter cold or summer heat affects the rate at which motor oil flows.<\/strong><\/p>\n <\/p>\n
<\/p>\n
engine oils there is also a\u00a0specification\u00a0that must be met at 150\u00b0C, known as a\u00a0High Temperature\/High Shear (HT\/HS)<\/strong>\u00a0viscosity<\/p>\n <\/p>\n
![\"Engine](\"https:\/\/in.rajuginni.com\/gear\/wp-content\/uploads\/sites\/3\/2024\/11\/Engine-oil-grade-based-on-out-side-temprature.jpg\")
<\/p>\n
<\/p>\n
<\/span>Mineral vs Semi synthtic vs fully synthetic<\/span><\/h2>\n<\/span>RPM & temperature of engine chart<\/span><\/h3>\n![\"Graph-of-temperature-against-time-at-2500-rpm-of-engine-speed\"](\"https:\/\/in.rajuginni.com\/gear\/wp-content\/uploads\/sites\/3\/2024\/11\/Graph-of-temperature-against-time-at-2500-rpm-of-engine-speed.png\")
<\/p>\n
<\/p>\n
![\"How](\"https:\/\/in.rajuginni.com\/gear\/wp-content\/uploads\/sites\/3\/2024\/11\/How-To-Choose-The-Right-Viscosity-grade-Motor-engine-Oil.jpg\")
![\"High](\"https:\/\/in.rajuginni.com\/gear\/wp-content\/uploads\/sites\/3\/2024\/11\/High-viscosity-VS-low-viscosity-of-engine-oil.jpg\")
![\"\"](\"https:\/\/in.rajuginni.com\/gear\/wp-content\/uploads\/sites\/3\/2024\/11\/engine-oil-grade-power-hp.png\")
<\/p>\n","protected":false},"excerpt":{"rendered":"
subject tvs raider 125 cc bajaj n125 Duke 125 cc hero xtreme 125r Manfufacure recommed grade tvstru4 10w30 Bajaj Premium 4T 10W30 10w50 motul 7100 fullysythtic in all ktm bikes upto 390cc 10W30 SL MA2 Oil type fully synthetic fully synthetic service schedule in km 6ooo 5000 7500 kms 3000 service schedule days 6 […]<\/p>\n","protected":false},"author":1,"featured_media":127,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-121","post","type-post","status-publish","format-standard","has-post-thumbnail","category-uncategorized","entry"],"_links":{"self":[{"href":"https:\/\/in.rajuginni.com\/gear\/wp-json\/wp\/v2\/posts\/121","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/in.rajuginni.com\/gear\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/in.rajuginni.com\/gear\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/in.rajuginni.com\/gear\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/in.rajuginni.com\/gear\/wp-json\/wp\/v2\/comments?post=121"}],"version-history":[{"count":1,"href":"https:\/\/in.rajuginni.com\/gear\/wp-json\/wp\/v2\/posts\/121\/revisions"}],"predecessor-version":[{"id":131,"href":"https:\/\/in.rajuginni.com\/gear\/wp-json\/wp\/v2\/posts\/121\/revisions\/131"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/in.rajuginni.com\/gear\/wp-json\/wp\/v2\/media\/127"}],"wp:attachment":[{"href":"https:\/\/in.rajuginni.com\/gear\/wp-json\/wp\/v2\/media?parent=121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/in.rajuginni.com\/gear\/wp-json\/wp\/v2\/categories?post=121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/in.rajuginni.com\/gear\/wp-json\/wp\/v2\/tags?post=121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}