kyo Posted August 14, 2013 Share Posted August 14, 2013 OK, my beloved car has just ticked over the monumental 100K km mark, and it's going strong than ever. No major issues what so ever through out the life, true Toyota relibility there. The only minor issue I've noticed lately is the "low engine oil" light is coming up a lot sooner than before. For my last two oil change services, the light came up after only travelled 6000km out of the recommended 15000km service interval. I had to top up about 1 to 2 Lites of engine oil just so it can last until the next service. I know Toyota engines in general, espically car in this age tends to chew thru engine oil faster. ---> Result of 3 hours of research on various Toyota/Lexus/IS forums. This issue is also has been verified by the Lexus service centre guys and treated as a normal behavior. Now, since I'm going to do DIY oil change from now on, I'm interested to see which Engine Oil and Oil Type/Grade you guys using or been told to use? On the OEM Oil Cap -> 5W30 Chatwood Lexus Recommend -> 10w40 (better engine protection with this thicker oil?) Chatwood service manager told me they use -> Caltex Engine Oil Fuel Economy -> 550KM Full Tank There are similar topics covered on the U.S forums, but I don't think it's applicable here as we have a warmer climate. Especially love to hear feedbacks from high KM ISX50 owners. Also, for people want to learn more about engine oil and the differences between types/grades, read here: http://www.carbibles.com/engineoil_bible.html Quote Link to comment Share on other sites More sharing options...
E910 Posted August 15, 2013 Share Posted August 15, 2013 You said high mileage? 100K isn't high, 200K+ is what I'd class as high mileage these days. I'd stick with 5w30, I definitely wouldn't use 10w40, not good for VVTi or fuel economy. If you must run a 40 weight then 0w-40 or 5w-40 synthetic only but you've got another 100K before you even need to think about going that thick. Back to your 5w30, Motul 8100 or Mobil1 are very good options. Quote Link to comment Share on other sites More sharing options...
kyo Posted August 15, 2013 Author Share Posted August 15, 2013 Thanks for the advice Carl! 100K is already the highest km car I ever owned, usually I change to a younger car before reach that, but I guess this time the IS is a keeper. Funny thing is, after the major 90K service, I'm acutally getting better milages with the thicker oil (10W40). I used to only get less than 500Km per tank, but now it's at least 550Km each tank. I think I'll try 5w30 this time, may be Mobil 1 Quote Link to comment Share on other sites More sharing options...
sliq Posted August 16, 2013 Share Posted August 16, 2013 I think I'll try 5w30 this time, may be Mobil 1 get castrol edge sport, 5w30. Quote Link to comment Share on other sites More sharing options...
E910 Posted August 17, 2013 Share Posted August 17, 2013 Mobil1 is far superior to Castrol Edge sliq. You've been sucked in by the marketing if you think otherwise. The reason you're fuel economy has improved is more down tho the fact a 90K service replaces trans & diff oil as well as spark plugs. 10w40 will never improve fuel economy over a 5w30 If you want to learn more about oil then there's only one place on the net worth looking http://www.bobistheoilguy.com/ If you want the best >> https://www.facebook.com/motulaustraliacars Quote Link to comment Share on other sites More sharing options...
kyo Posted August 21, 2013 Author Share Posted August 21, 2013 Thanks for the feedbacks guys! I went down to the local Autobahn and the rep recommonded Motul, so I bought the last 2 bottles of 5L Motul Eco 8100 5w30, I don't think they even stock much of these. Going to change oil & filter this weekend, I'll see how this plays out. Quote Link to comment Share on other sites More sharing options...
kyo Posted August 21, 2013 Author Share Posted August 21, 2013 Btw, this stuff aren't cheap... $70 for 5L at Autpbahn Quote Link to comment Share on other sites More sharing options...
coconut2001 Posted August 22, 2013 Share Posted August 22, 2013 Yeah that doesn't seem cheap, 7 quartz of mobil 1 5w30 should be $70 Quote Link to comment Share on other sites More sharing options...
E910 Posted August 23, 2013 Share Posted August 23, 2013 Which one did you get? Eco-clean or Eco-nergy? Hopefully the nergy. That's a good price for Motul. M1 is $87 for 5L at supercheap. You get what you pay for with oil, don't be fooled by cheap "synthetics" like castrol which are made from group 3 (hydrocracked) base stocks rather than group 4 (PAO) like Motul & Mobil1 Quote Link to comment Share on other sites More sharing options...
Bowen Yong Posted August 26, 2013 Share Posted August 26, 2013 From my experience Castrol is rubbish, the Edge Titianium goes down fast and the engine is especially loud compare to Mobil. In my opinion Mobil is pretty good! Definitely will supply my own Mobil oil next time i go for service. Quote Link to comment Share on other sites More sharing options...
E910 Posted January 31, 2014 Share Posted January 31, 2014 Mobil1 is good but Motul is better again (speaking from personal experience). All the Motul products you mentioned are designed to meet different specifications whether they be manufactures specs, ACEA or ILSAC. Look at the performance standard for each range & you'll see they're all different. C3, C1 A5/B5 etc. They're to to with ash content, fuel economy, HTHS etc. Have a read to see what they all mean http://www.infineum.com/Documents/ACEA/ACEA%202012%20oil%20sequences.pdf & http://www.infineum.com/Pages/ACEAandAPITables.aspx I can vouch for the X-clean 5W-30 being a very good oil, we use it in a lot of Toyota/Lexus direct injection motors here. That would probably be my choice although the Eco-nergy looks interesting but probably a bit on the thin side I run 300V 5W30 in my own car but that's another story... Quote Link to comment Share on other sites More sharing options...
vs2306 Posted May 18, 2014 Share Posted May 18, 2014 Topped up my IS250 with mostly 10W30, but that wasn't enough. So I used a little bit on Castrol Magnatec 10W40. I know mixing oils is best avoided, but is this ok for the time being? Hoping to get my car serviced with my local mechanic, I believe he stocks Magnatec 5W30, not sure if he has 10W30 like the dealership. Quote Link to comment Share on other sites More sharing options...
MR2QIK Posted May 21, 2014 Share Posted May 21, 2014 Mixing oils obviously isn't as ideal as matching oil, but it's much better than running low. You'll have no issues. Quote Link to comment Share on other sites More sharing options...
Wind Chaser Posted June 14, 2014 Share Posted June 14, 2014 From my experience Castrol is rubbish, the Edge Titianium goes down fast and the engine is especially loud compare to Mobil. In my opinion Mobil is pretty good! Definitely will supply my own Mobil oil next time i go for service. So your is250 sipping engine oil with the Castrol Edge 5-30W? Quote Link to comment Share on other sites More sharing options...
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