15w-50 Instead Of 15w-40

[nelany]

Mga Peeps, pwede bang gamitin ang 15W-50 fully synthetic oil instead ng 15W-40 mineral oil sa Crosswind A/T? Meron bang masama kung 15W-40 ang gagamitin? The engine odo is just 15K. Salamat..

[airshaq20]

1. What is your recommended oil viscosity by your manufacturer?
2. In order for you to use synthetic (from mineral) - you should first do the proper "process of transformation" - or you will have oil leaks, burned oil, etc. Use semi-synthetic first then use synthetic on the next oil change.

[nelany]

airshaq20, the manual only specify 15W-40. I cannot remember that Isuzu specify the viscosity of the oil in the manual thus I have no comparison.

[BlueBimmer]

15w50 will be fine if not better, it just means that the oil can withstand higher engine temperature than the 15w40.

[nelany]

Thanks BlueBimmer,

Will the viscosity not affect the performance of the engine? 15w50 seems to less viscous than 15w40. Salamat.

[BlueBimmer]

the viscosity is just the same, if it were a 0w50 or 5w50 synthetic oil then that would be significantly thinner. the oils that you are comparing have the same viscosity, but the synthetic oil can protect your engine better * high temperatures.

[nelany]

Salamat uli.

[Field Master]

I was confused. Just need some clarification on oil viscosity:
1) For synthethic oil which one is more thinner: 15W-40 or 15W-50?
2) When we say the oil is thinner does it mean that the oil is less viscous?

Thanks.

[islandermike]

Viscousity means the abilty to flow. 15w-40 and 15w-50 have the same viscousity (15w) but the 50 can withstand a higher temp. Synthetic oil is usually good for new cars since the seals and gaskets have not expanded yet from using a regular oil. Synthetic oil tends to shrink the seals and gaskets, so if you use a synthetic oil after the gaskets have already been expanded for a better fit between two metals, synthetic oil will shrink them back and leak might develop. This is one reason why synthetic oil is not recommended for older cars. Oil viscousity is determined by using the drop ball test, which is dropping two stainless steel balls at the same time in a reference oil and oil being tested para malaman kapag nagbago ang viscousity this is usually done on big engines where changing oil every six months is not very cost effective. Viscosity changes in a dirty or contaminated oil which you can also translate as a change in the oil's ability to flow within your engine. Yon namang you see two numbers such as 15w-50 is because the first one is viscousity itself bago yong 50 is the highest temp it can withstand without the oil breaking down or loses its ability to protect your engine. 5W it thinner than 15W, ginagamit sa malalamig na lugar so that when you start your engine when the outside temp is 10degF oil will still flow to protect.

[acenie]

Viscousity means the abilty to flow. 15w-40 and 15w-50 have the same viscousity (15w) but the 50 can withstand a higher temp. Synthetic oil is usually good for new cars since the seals and gaskets have not expanded yet from using a regular oil. Synthetic oil tends to shrink the seals and gaskets, so if you use a synthetic oil after the gaskets have already been expanded for a better fit between two metals, synthetic oil will shrink them back and leak might develop. This is one reason why synthetic oil is not recommended for older cars. Oil viscousity is determined by using the drop ball test, which is dropping two stainless steel balls at the same time in a reference oil and oil being tested para malaman kapag nagbago ang viscousity this is usually done on big engines where changing oil every six months is not very cost effective. Viscosity changes in a dirty or contaminated oil which you can also translate as a change in the oil's ability to flow within your engine. Yon namang you see two numbers such as 15w-50 is because the first one is viscousity itself bago yong 50 is the highest temp it can withstand without the oil breaking down or loses its ability to protect your engine. 5W it thinner than 15W, ginagamit sa malalamig na lugar so that when you start your engine when the outside temp is 10degF oil will still flow to protect.

bakit sa diesel 15W40 while gasoline 20W50 here in the philippines. di ba masmainit ang diesel. any comments on this?

[x-wind]

Viscousity means the abilty to flow. 15w-40 and 15w-50 have the same viscousity (15w) but the 50 can withstand a higher temp. Synthetic oil is usually good for new cars since the seals and gaskets have not expanded yet from using a regular oil. Synthetic oil tends to shrink the seals and gaskets, so if you use a synthetic oil after the gaskets have already been expanded for a better fit between two metals, synthetic oil will shrink them back and leak might develop. This is one reason why synthetic oil is not recommended for older cars. Oil viscousity is determined by using the drop ball test, which is dropping two stainless steel balls at the same time in a reference oil and oil being tested para malaman kapag nagbago ang viscousity this is usually done on big engines where changing oil every six months is not very cost effective. Viscosity changes in a dirty or contaminated oil which you can also translate as a change in the oil's ability to flow within your engine. Yon namang you see two numbers such as 15w-50 is because the first one is viscousity itself bago yong 50 is the highest temp it can withstand without the oil breaking down or loses its ability to protect your engine. 5W it thinner than 15W, ginagamit sa malalamig na lugar so that when you start your engine when the outside temp is 10degF oil will still flow to protect.

bro, ok lang ba after drain yun oil tank lagyan mo ng sae 40 and run engine for 10-15 mins. and drain again then refil with 15w-40. ok kaya to sae 40 panglinis lang sa loob.

[islandermike]

bro, ok lang ba after drain yun oil tank lagyan mo ng sae 40 and run engine for 10-15 mins. and drain again then refil with 15w-40. ok kaya to sae 40 panglinis lang sa loob.

Actually SAE 40 is very thick panglinis sa loob ng engine plus there is not a need to flush your engine unless you are switching from mineral based to synthetic of which you can use the 0W20 and ran it for about 20 minutes bago palit ng synthetic oil. Also, most current oil API rating is as follows, tingnan mo lang doon sa oil container:

SM Current For all automotive engines presently in use. Introduced in the API service symbol in November 2004

CH-4 Current Introduced in 1998 for high-speed four-stroke engines. CH-4 oils are specifically designed for use with diesel fuels ranging in sulphur content up to 0.5% weight. Can be used in place of CD, CE, CF-4 and CG-4.

SL Current For all automotive engines presently in use. Introduced in the API service symbol in 1998

CG-4 Current Introduced in 1995 for high-speed four-stroke engines. CG-4 oils are specifically designed for use with diesel fuels ranging in sulphur content less than 0.5% weight. CG-4 oil needs to be used for engines meeting 1994 emission standards.

SA, SB, SC, SJ, SE, SH ARE ALL OBSOLETE

[acenie]

Actually SAE 40 is very thick panglinis sa loob ng engine plus there is not a need to flush your engine unless you are switching from mineral based to synthetic of which you can use the 0W20 and ran it for about 20 minutes bago palit ng synthetic oil. Also, most current oil API rating is as follows, tingnan mo lang doon sa oil container:

SM Current For all automotive engines presently in use. Introduced in the API service symbol in November 2004

CH-4 Current Introduced in 1998 for high-speed four-stroke engines. CH-4 oils are specifically designed for use with diesel fuels ranging in sulphur content up to 0.5% weight. Can be used in place of CD, CE, CF-4 and CG-4.

SL Current For all automotive engines presently in use. Introduced in the API service symbol in 1998

CG-4 Current Introduced in 1995 for high-speed four-stroke engines. CG-4 oils are specifically designed for use with diesel fuels ranging in sulphur content less than 0.5% weight. CG-4 oil needs to be used for engines meeting 1994 emission standards.

SA, SB, SC, SJ, SE, SH ARE ALL OBSOLETE

CI-4 is the latest API Rating for diesels... like Delo 400, Mobil Delvac Mx..

[islandermike]

CI-4 is the latest API Rating for diesels... like Delo 400, Mobil Delvac Mx..

I CONCUR!

[niky]

Depends on the car naman. Mine takes 15w40 (gasoline)... others take 10w or 5w.

[finchy18]

pwde lng yan..

[islandermike]

In hot climates like the Philippines, 15w-50 or 15w-40 are the recommended mineral based engine oil but if you can get a hold of a 20w-40 it is much better because it has a narrower spread between the numbers, meaning less use of polymer which
is the substance that breaks down. Consumers Report tested the filtermag and they reported it works.
http://www.filtermag.com/?app=Automo...&makes=MERCURY

[islandermike]

In hot climates like the Philippines, 15w-50 or 15w-40 are the recommended mineral based engine oil but if you can get a hold of a 20w-40 it is much better because it has a narrower spread between the numbers, meaning less use of polymer which
is the substance that breaks down. Consumers Report tested the filtermag and they reported it works.
http://www.filtermag.com/

[theveed]

In hot climates like the Philippines, 15w-50 or 15w-40 are the recommended mineral based engine oil but if you can get a hold of a 20w-40 it is much better because it has a narrower spread between the numbers, meaning less use of polymer which
is the substance that breaks down. Consumers Report tested the filtermag and they reported it works.
http://www.filtermag.com/

Correct... The narrower the spread, the less additives and more oil.