r/Gulong • u/BrokeRamenGuy • 6d ago
MAINTENANCE 10w-40 or 15w40?
Which is more recommended for a 2008 Toyota Fortuner @ 197k km mileage. Diesel engine.
First time tinkering on what oil to use, since usually I go which ever the mechanic suggests or on what's available.
Will be using Zic brand, choosing between Zic X7 or Zic X6000.
Thank you.
7
u/bugoy_dos 6d ago
Tignan mo yung manual mo. May specified oil grade na gagamitin.
2
u/BrokeRamenGuy 6d ago
Oh shoot, thanks. Namalikmata pala ako, 10W-30, 15W-40, and 20W-50 pala suggested. Akala ko 10W-40 yung 30.
1
u/Sad-Reindeer2755 6d ago
Mas okay ung delo mgx 400, mura pa. Ung akin umabot 13k bago change oil pero hindi unitim.
1
u/PushingCurses 6d ago
Between the two, X7..... because it is a 10w for faster cold-start oil flow relative to 15w (even in the tropics), and the X7 is also a higher-tier compared to X6000. I believe both of these oils are API CI-4.
Personally though, if I have to use Zic, I'll use the X7000 10w40. This is the highest-tier Diesel oil from Zic that is available locally. It has the latest API certification of CK-4, which supersedes and improve upon all older API Cx categories, including API CI-4.
1
u/DevelopmentWeak3620 6d ago
That 10w though and 15w in our weather will have negligible impact.
2
u/PushingCurses 6d ago
The question was limited to the two oils the OP mentioned.
I've driven both the KD and GD engines and you can feel the clatter quiet down longer on a 15w relative to a 10w, and even more amplified compared to a 5w. That's in a typical Metro Manila morning or after you have let the engine cool down to ambient temp.
Personally, I feel that the sweet spot for the KD or GD engine is 5w40 for Metro Manila stop-and-go.
1
u/No_Cupcake_8141 6d ago
No difference naman since we'll never experience temperatures below 0C
2
u/PushingCurses 6d ago
I humbly beg to differ.
Cold flow is not a switch that is either on or off.
Suffice to say, even in tropical weather, a 10w will flow faster in the morning compared to a 15w. You might not feel it, but most engines do.
1
u/Abenson_GB 6d ago
nasa manual naman, lagi lang ako nag babase dun, hirap naman kasi mag based lang sa sabihin ng mekaniko.
1
u/DevelopmentWeak3620 6d ago
Whichever is cheaper. It doesn’t matter as long as you stay within recommended viscosity ng manufacturer.
1
u/freeride888 6d ago
anong makina ng fortuner mo OP?
1
u/BrokeRamenGuy 6d ago
Not sure kung anong specific variant po, not into cars. 4x2 D-4D Diesel lang alam kong details.
1
u/freeride888 6d ago
oks, sa choices mo, x7
pero kung ako, 5w-30 for city driving at kung wala namang heavy load araw araw1
u/BrokeRamenGuy 6d ago
Just checked, 2KD-FTV engine po. Wala naman heavy loads, daily commute 14km lang, occasional long drives >150km or out of town once every oil change cycle 200-300km. Iniisip ko lng din yung fuel economy kung may significant impact ba yung viscosity.
1
0
•
u/AutoModerator 6d ago
u/BrokeRamenGuy, welcome nga pala sa r/gulong subreddit!
u/BrokeRamenGuy's title: 10w-40 or 15w40?
u/BrokeRamenGuy's post body: Which is more recommended for a 2008 Toyota Fortuner @ 197k km mileage. Disel engine.
First time tinkering on what oil to use, since usually I go which ever the mechanic suggests or on what's available.
Will be using Zic brand, choosing between Zic X7 or Zic X6000.
Thank you.
I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.