Menu
Home
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Reply to thread
Click here to become an Official Member of BMW Club Malaysia
Download Form
Home
Forums
BMW Tech and Performance
Engine Tech
WTA: mixing engine oil with different viscocity and/or brand
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="turbology" data-source="post: 560720" data-attributes="member: 10223"><p>Yes to what B33mEr said. </p><p>There are more than just the viscosity of the oil were changed when you mixing it, it also affect HTHS, Sulfated Ash, base number and flash point.</p><p>Flash point decide how fast your motor oil vapourized when is hot. So you need to check your engine oil regularly.</p><p>High viscosity will, sometimes, increase oil consumption too. Thus checking oil consumption, and logging it down is great practise.</p><p></p><p>Different oil company use different stuff/mineral/chemical in the motor oil. Which mean, mixing different oil in same brand is usually ok & safe.</p><p>I won't recommend mixing different brand, unless absolutely a must.</p><p></p><p>Nowadays, newer engine recommend lower viscosity oil because 1. better technology = less friction. 2. help to reduce oil consumption. Not much, maybe 1% at max per tank of fuel. </p><p>But when calculate at a bigger scale, that's few thousand of gasoline are saved in the world per day. (And a better image of car company -> greener. And to meet US fuel regulations (CAFE <a href="http://en.wikipedia.org/wiki/Corporate_Average_Fuel_Economy" target="_blank">http://en.wikipedia.org/wiki/Corporate_Average_Fuel_Economy</a>)</p><p></p><p>But that's sacrifice for engine protection, especially when I rev alot and drive it hard almost everytime. Thus for my preference, 40weight is the minimum I will go. </p><p></p><p>Hope this help <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="turbology, post: 560720, member: 10223"] Yes to what B33mEr said. There are more than just the viscosity of the oil were changed when you mixing it, it also affect HTHS, Sulfated Ash, base number and flash point. Flash point decide how fast your motor oil vapourized when is hot. So you need to check your engine oil regularly. High viscosity will, sometimes, increase oil consumption too. Thus checking oil consumption, and logging it down is great practise. Different oil company use different stuff/mineral/chemical in the motor oil. Which mean, mixing different oil in same brand is usually ok & safe. I won't recommend mixing different brand, unless absolutely a must. Nowadays, newer engine recommend lower viscosity oil because 1. better technology = less friction. 2. help to reduce oil consumption. Not much, maybe 1% at max per tank of fuel. But when calculate at a bigger scale, that's few thousand of gasoline are saved in the world per day. (And a better image of car company -> greener. And to meet US fuel regulations (CAFE [url]http://en.wikipedia.org/wiki/Corporate_Average_Fuel_Economy[/url]) But that's sacrifice for engine protection, especially when I rev alot and drive it hard almost everytime. Thus for my preference, 40weight is the minimum I will go. Hope this help :) [/QUOTE]
Verification
Post reply
Home
Forums
BMW Tech and Performance
Engine Tech
WTA: mixing engine oil with different viscocity and/or brand
Top
Bottom
