Difference between Mobile 1 5W-20 and 5W-30?
#4
Originally Posted by moda_way
Their viscosity when cold.
Use the recommended.
Use the recommended.
#6
Originally Posted by Firefightr86
5W 20 and 5W 30 are almost identical, honda used to recommend 5W-20, now there recommending the 30, its really not much of a change at all
I have 5W-20 in the car right now
I have 5W-20 in the car right now
My oil cap says "5W-30", as does my owner's manual.
Trending Topics
#8
Long thread on this 5W-20 versus 5W-30 thing already:
https://acurazine.com/forums/showthread.php?t=23390
Summary: 5W-20 gives you a hair better gas mileage, 5W-30 protects the engine a hair better
https://acurazine.com/forums/showthread.php?t=23390
Summary: 5W-20 gives you a hair better gas mileage, 5W-30 protects the engine a hair better
#9
Driver/Detailer
Originally Posted by synthetic
5W20 would thin-up slightly faster than 5w30 in colder regions.
There's no reason to use it over the recommended 5w30 unless you live in Alaska.
There's no reason to use it over the recommended 5w30 unless you live in Alaska.
If you lived in Alaska, you'd use 0w-30 instead. Not 5w-20.
#10
Originally Posted by rb1
Long thread on this 5W-20 versus 5W-30 thing already:
https://acurazine.com/forums/showthread.php?t=23390
Summary: 5W-20 gives you a hair better gas mileage, 5W-30 protects the engine a hair better
https://acurazine.com/forums/showthread.php?t=23390
Summary: 5W-20 gives you a hair better gas mileage, 5W-30 protects the engine a hair better
#11
Suzuka Master
Join Date: Jul 2003
Location: Cincinnati, OH
Age: 49
Posts: 7,594
Likes: 0
Received 4 Likes
on
3 Posts
Originally Posted by rb1
Actually, I'd think 5W-20 and 5W-30 would have the same (well, very similar) viscosity when cold, but 5W-20 will be thinner at the normal engine operating temperatures (e.g. hot).
I always mix them up.
#12
both oils will have 5w viscosity during start-up and in cold temperatures, it helps protect your engine from serious wear during start-up, but as the engine gets to its operating temp. one oil will have 20w and the other 30w. Acura recommends 5w-30.
#13
Driver/Detailer
Originally Posted by ATsxMan8305
This is generally correct, but don't forget, a 5W-30 synthetic will give you better gas mileage than a 5W-30 dyno...b/c synthetic is thinner. Plus better on cold starts
And for cold starts first thing in the morning, PAO synthetics tend not to stick to the piston wall surface. Dino oils, semi-synthetics and the new ester-based synthetic oils "stick" better to metal surfaces overnight.
#14
^^ thanks for correcting me, aaronng! I stand corrected. Also...wanted to mention on this thread a great site regarding engine oil. Very easy read.
http://minimopar.knizefamily.net/oil.html
http://minimopar.knizefamily.net/oil.html
#15
Originally Posted by aaronng
...But it is uncommon to find a 5w-30 dino oil. They usually start from 10w-40 upwards....
http://www.partsamerica.com/ProductL...?Category=3255
VW ran in to big trouble with this in their 1.8T's and oil sludging. Their recommended oil is 5W-40, available only in synthetics. However, the manual also said "If 5W-40 is unavailable, then 5W-30 can be used".
5W-40 oil, however, is very hard to come by, so everyone started putting dino oil in their turbo motors. Not good...
#16
Driver/Detailer
Originally Posted by rb1
Actually 5W-30 dino oil is pretty common. Check out all the dino oils on this list: (a few synthetics mixed in)
http://www.partsamerica.com/ProductL...?Category=3255
VW ran in to big trouble with this in their 1.8T's and oil sludging. Their recommended oil is 5W-40, available only in synthetics. However, the manual also said "If 5W-40 is unavailable, then 5W-30 can be used".
5W-40 oil, however, is very hard to come by, so everyone started putting dino oil in their turbo motors. Not good...
http://www.partsamerica.com/ProductL...?Category=3255
VW ran in to big trouble with this in their 1.8T's and oil sludging. Their recommended oil is 5W-40, available only in synthetics. However, the manual also said "If 5W-40 is unavailable, then 5W-30 can be used".
5W-40 oil, however, is very hard to come by, so everyone started putting dino oil in their turbo motors. Not good...
We are however spoilt for choice when looking at 5w-40. There is Castrol's Edge 0w-40 (0w is the same viscosity as 5w except for the lower pour point), Shell Helix Ultra 5w-40, Motul's 8100 Xcess 5w-40 and also Elf's Excellium GP 5w-40.
Thread
Thread Starter
Forum
Replies
Last Post
lanechanger
Member Cars for Sale
4
10-13-2015 10:56 AM