wrong oil viscosity, bad?

**pskipper** · August 27th, 2008 02:15 AM

10w-40 instead of 10w-30, masama ba sa makina? vvti engine.

**v6dreamer** · August 27th, 2008 02:40 AM

Usually more important than what kind of oil you use between the two are that you are changing it (and the filter) regularly. 10w-30 oil is good in any car or truck, its the one most recommended.

**lhie** · August 28th, 2008 10:59 AM

what viscosity do you suggest for a 1990XL5 corolla?

**puroy** · August 28th, 2008 09:43 PM

Originally Posted by lhie

what viscosity do you suggest for a 1990XL5 corolla?

for a 10+yr car...10w40 will do.

**lhie** · August 29th, 2008 09:34 AM

Thank you Sir for the suggestion, ask ko lng po kung ano difference ng 20w50 at 10w40, i called up speedyfix kung ano ang pede sa car ko and they recommended ung 20w50.

**Biggs** · August 30th, 2008 01:37 AM

Originally Posted by lhie

Thank you Sir for the suggestion, ask ko lng po kung ano difference ng 20w50 at 10w40, i called up speedyfix kung ano ang pede sa car ko and they recommended ung 20w50.

http://www.carbibles.com/engineoil_bible.html

**rayban7g** · August 30th, 2008 05:42 AM

Originally Posted by puroy

for a 10+yr car...10w40 will do.

...Hmmm, for some yep, but for most vehicles (especially with higher mileage) is no longer recommended

...especially for a 1990 Corolla (w/c is 18 years old already like lhie), so 20w-50 will do the best.

**lhie** · August 30th, 2008 01:04 PM

thank you po, nagpa change oil ako kahapon kay speedyfix and ung 20w-50 ung pinalagay ko... sabi ng bro ko parang naging smooth ung takbo.. ewan ko lang baka psychological lang.. hehehe pero observe ko pa in a few days pa kung may impact sa fuel consumption.. again salamat po sa lahat

**v6dreamer** · August 31st, 2008 09:24 AM

You shouldnt, that is horrible advise. 20w50 is a very thick oil and your engine will have to work extra hard to pump that stuff and get it flowing especially if it gets cold where you live. you should stick with 10w30, 5w30 or 10w-40 depending on the car and engine. Dont let mileage scare you into thinking you need a different type of oil. Most people that use 20w50 either burn a ton of oil or leak it and the thickness will lesson both of those but it is very hard on the engine.

Is your oil pressure low? Engine making noise? Burning and or leaking oil at a high rate?
If no..... use what you've been using..
20w-50 is reserved for engines on they're last or racing engines with very loose clearances.
20w-50 also shears down to a 40 weight after a couple thousand miles anyway..
shearing oil may leave deposits.

Think about it!!!!!!!!

**s_quilicot** · August 31st, 2008 09:39 AM

sometimes pagnapalit ka into thicker oil FC would increase.

based on my expirence on our 2005 altis 1zzfe vvt-i nag try ako ng 5w-40

and anong nangyari?

lumala ang FC from average of 8.2km/L bumaba into 4.2 to 5km/L.

mas hirap ang engne, malakas ang FC and pangit ang takbo.

ngayon nagpalit ako ng oil and i used royal purple 5w-30 and the FC is back on 8+ again..

minsan mas mapapagastos kapa pag gumamit ka ng thicker oil not heavier oil due to increase in FC rather than using a thin oil and kung leak man, dagdagan mo nalang parati. i think mas cheaper ang labas ng ganito rather than using thick oil.

hindi pa hirap umandar ang makina mo.

im using 5w-30 Royal Purple both on our 4jx1 and 1zzfe.

IMO