Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
 

 


 
Go Back   Toyota Yaris Forums - Ultimate Yaris Enthusiast Site > Technical Forums > DIY / Maintenance / Service
  The Tire Rack

Reply
 
Thread Tools Display Modes
Old 08-30-2015, 10:57 PM   #19
IllusionX
It's the illusion you see
 
Drives: 07 Yaris Sedan Aero
Join Date: Oct 2006
Location: Brossard, QC
Posts: 3,852
Synthetic oil is NOT thinner! Viscosity remain the same (almost, since they cannot be exactly identical) between the 2 types of oil!

Sent from my A0001 using Tapatalk
__________________
IllusionX is offline   Reply With Quote
Old 08-31-2015, 06:00 AM   #20
bronsin
 
bronsin's Avatar
 
Drives: 2009 Base Hatch 2 Dr Auto
Join Date: Dec 2008
Location: nj
Posts: 4,028
Quote:
Originally Posted by IllusionX View Post
Synthetic oil is NOT thinner! Viscosity remain the same (almost, since they cannot be exactly identical) between the 2 types of oil!

Sent from my A0001 using Tapatalk
Better do some research. It is thinner when hot and oil consumption goes UP in older engines compared to regular oil. This used to be on the label when synthetic oil came out.

Not only that if you have oil leaks like an older engine is likely to develop it leaks out faster too.
__________________
Synthetic Oil: Its All In Your Head
bronsin is offline   Reply With Quote
Old 01-06-2019, 04:45 PM   #21
ojeysky
 
Drives: Sedan Yaris 2010
Join Date: Dec 2017
Location: Nigeria
Posts: 46
Loosing oil

Hello,

Though old thread, but I have noticed am loosing oil since I started using synthetic oil and Fram filters. My millage is about 130k, no sign of leakage and car runs well could the change to synthetic be the problem or Fram filters?

Regards
ojeysky is offline   Reply With Quote
Old 01-06-2019, 05:33 PM   #22
tmontague
 
tmontague's Avatar
 
Drives: '08 2zr swapped Vios M/T
Join Date: Oct 2012
Location: Hamilton Ont.
Posts: 2,564
Subthetic oil tends to leak/burn more in an old engine as it is thinner at cold temps and flows better into small spaces even if viscosity is identical. If you want the synthetic oil for cold starts then go with a 0w40 instead of a 0w30. Based on your location I dint think your concern is cold start so just switch back to a conventional oil or go to a thicker viscosity
__________________
I like to drive a slow car fast...
tmontague is offline   Reply With Quote
Old 01-21-2019, 03:49 PM   #23
ojeysky
 
Drives: Sedan Yaris 2010
Join Date: Dec 2017
Location: Nigeria
Posts: 46
Quote:
Originally Posted by tmontague View Post
Subthetic oil tends to leak/burn more in an old engine as it is thinner at cold temps and flows better into small spaces even if viscosity is identical. If you want the synthetic oil for cold starts then go with a 0w40 instead of a 0w30. Based on your location I dint think your concern is cold start so just switch back to a conventional oil or go to a thicker viscosity
Yeah I have no issue with cold start; lowest temperature here is 20C and that is occasional (it's usually above 30C), so what viscosity do you recommend I go for? By the way I was using 20w50 before but noticed performance improvement since I switched to synthetic 5w30 except that I loose oil. So what viscosity of conventional or synthetic should I switch to without loosing much performance and fuel economy?
ojeysky is offline   Reply With Quote
Old 01-21-2019, 04:03 PM   #24
tmontague
 
tmontague's Avatar
 
Drives: '08 2zr swapped Vios M/T
Join Date: Oct 2012
Location: Hamilton Ont.
Posts: 2,564
5w30 should be fine, but there is no way of really knowing if you exceed factory specs without knowing oil temp and/or pressure. None of which is available without an aftermarket gauge.

The only way going to a heavier weight oil makes sense is if you are operating above 212F oil temps, or if you want to reduce oil consumption and you notice it helps. You could try a 10w30 as they are slightly thicker than a 5w30 and potentially may reduce oil consumption. The difference between a 5w30 and a 10w30 isn't very big however as they both have to fall into the same viscosity spectrum at 100C. Most 10w30's are a big thicker at 150C due to a higher HTHS rating but like I said, it may not be noticeable enough for consumption issues.
__________________
I like to drive a slow car fast...
tmontague is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Zage Turbo Kit Install - Toyota Yaris Focus_Sh1ft Forced Induction Forum 145 09-13-2018 06:31 PM
***The Engine Oil Bible*** Hussain-Vtec Performance Modifications 20 09-28-2016 02:47 PM
A Mystery Oi'll Say! Yar Is Word Fuel Economy Forum 16 05-11-2013 04:22 AM
Synthetic VS. Regular oil reliability captainm27 DIY / Maintenance / Service 98 01-20-2010 02:46 PM
Compiled 1NZFE Used Oil Analysis craigq DIY / Maintenance / Service 7 09-10-2007 04:27 PM


All times are GMT -4. The time now is 09:39 AM.




YarisWorld
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.