Motor Oil

[raine]

Im planning na magpachange oil, gusto ko sana subukan ang synthetic oil but ang engine ko ay medyo luma na at nabasa ko sa ibang forum na hindi adviseable gumamit ng synthetic oil sa lumang engine kaya sa mineral oil na lang ako. Anong mineral oil ang magandang gamitin and what brand and price? Meron akong nakita na VALVOLINE XLD MULTIGRADE SAE 20W-50 API SG/CD MOTOR OIL (114.45PESOS PER LITER) IN BLACK PLASTIC CONTAINER. MADE IN USA. Maganda ba ito? Meron na ba kayong comments sa price mahal ba? Sa mga kaibigan natin sa US maganda ba ang oil na ito ng VALVOLINE?

[jackaroo]

It's safe to use synthetic oils on old engines as long as:
- you don't have oil leaks (too expensive to keep topping up)
- the engine does not consume oil
- use quality oil filter, orig or Vic
On mineral/ synth oil, try to get one with the latest API rating-SL. The Valvoline's API SG is 3 levels lower.

[raine]

It's safe to use synthetic oils on old engines as long as:
- you don't have oil leaks (too expensive to keep topping up)
- the engine does not consume oil
- use quality oil filter, orig or Vic
On mineral/ synth oil, try to get one with the latest API rating-SL. The Valvoline's API SG is 3 levels lower.

BRO ANO BA API RATING PARA SAAN ITO AND PAANO KINACOUNT ITO LIKE SG NEXT SH GANOON BA. THANKS

[ILuvDetailing]

You can use synthetic, make sure that its thick enough so that it won't leak. Check your manual for the API rating. BTW Whats your car?

[vinj]

API rating generally refers to the standards set by the American Petroleum Institute for oil quality (well... something like that). The higher the API rating (in alpha-numeric), the better supposedly the oil is, especially for newer engines. CMIIW.

The higher ones nowadays is CI-4 for diesel oils and SL for gasoline engine oils.

The Valvoline you're looking at is already dated based on it's API ratings, you can try checking out other mineral based oils like Petron Touring (SJ or SL) 20W-50. Higher viscousity oils are recommended for older/high mileage engines and for hot/humid weather climates.

If you're on a budget (well nowadays who has the luxury of extra cash?), it's still better for your pocket and your engine to stick to regular oil then change regulary (every 5,000km).

[A121]

this might help, sir.

http://www.chris-longhurst.com/carbi...html?menu.html

[raine]

You can use synthetic, make sure that its thick enough so that it won't leak. Check your manual for the API rating. BTW Whats your car?

CIVIC 96 ,PWEDE BA ITONG OIL NA ITO TXS

[airshaq20]

this might help, sir.

http://www.chris-longhurst.com/carbi...html?menu.html

Very informative site..thanks.

[jackaroo]

Suggest using newer API oils, like SL/ SJ for your civic '96. If using synthetic oil, a thinner grade like 5w40, 10w30 is still ok since the oil won't burn in normal use. If you opt for mineral oils, then start at 15w40, 10w40 to give enough leeway to handle heat stress on the oil.
There are some diesel oils that are rated for both gas and diesel use, ie, API CI/SL so safe to use on gas engines too.
Check out Conoco Super J, 15w40, Api SJ/CF- about P420/gal.

[niwde11]

Check out Conoco Super J, 15w40, Api SJ/CF- about P420/gal.

san ka nakakuha nyan? mura ah.

[jasonub]

edited out

[vinj]

I'm still very doubtful about using and extending the oil intervals beyond what the manufacturers recommend due to experiences I've had before on cars that i have serviced for friends and family (accord, Cefiro, and a Sentra in this case... these cars all had change oil recommendations of every 5,000km).

The Accord used mineral oil and wasn't changed regularly (usually anywhere between 8K to 10K) and what happened at the 90,000km mark? Loss of oil pressure and a lot of sludge.

We tried using synth oil on a Cefiro and extended the drain to 10,000km just to find out how it looked like after, when we drained it, we had a dirty oil slick with really bad oil.

On the Sentra, noise and sludge developed with extended drains on synth oil (Mobil 1) but cleaning it all out cured the problem.

Of the cars that you serviced, what we're the actual recommended change oil intervals of the manufacturers? If you extended the oil change beyond what was recommended, did you still change the oil filter at least? What we're the useages of the cars (seems like they we're high end cars so thus, they may not be used or abused as much as an ordinary Jap sedan). The only cars we didnt change oil at 5K was our old BMW and the Opel of my boss as the manufacurers recommended 10K service only on the service manual... the new Hondas are also similar as well.

[jasonub]

edit

[SubaruSti]

Sobrang thick naman nung 20w-50,mahihirapan kang magistart sa umaga kapag ganyang kalapot ang oil na ga2mitin mo.

[jasonub]

Sobrang thick naman nung 20w-50,mahihirapan kang magistart sa umaga kapag ganyang kalapot ang oil na ga2mitin mo.

Dre, oil at that range should not affect your vehicle's starting. If its hard starting in the morning there are a lot of factors that will cause it and oil is not one of them. unless its sludge.

[jackaroo]

san ka nakakuha nyan? mura ah.

For Conoco oils- check Autosport service centers, in either 20th ave, cubao or soliven ave, antipolo.
Just checked prices, the Conoco Super J 15w40 was P400/ 4L and P115/L.

[raine]

WHat property of oil represent ng API rating ito ba ang viscousity? Kung viscousity ano mas malapot SL or SG? Kasi what is written sa manual is use oil API SG or SJ. Maybe during printing ng manual wala pang SL noon? Bakit kaya naging masmaganda ang SL? pls give more info..

[arj]

im still a bit hazy about oil viscocity... i know "w" is for winter grade (tama ba?) pero how do i distinguish which is thicker or thinner? & since wer on a tropical climate, do i need to choose one w/ a lower figure sa winter grade?i usually use 20w50 mineral to be on the safe side. can someone please enlighten me? thanks.

[OTEP]

I am also not a believer of extending oil drain intervals. The oil can withstand it with no problem. It will not break down or lose lubricity. But the problem is the oil gets saturated with impurities already and cannot hold any more. So the impurities end up 'outside' the oil and in contact with the engine components. You will have a hard time differentiating saturated from non-saturated oil simply by eyeballing it. I took up science during my pre-med years and had access to laboratories and image enhancing equipment.

[jasonub]

hyperlink to MOBIL