Change Synthetic Oil after 10k vs Change Regular Oil after 5k

[froshie1]

Which do you think is better and why? For me, I don't get why people using synthetic oil tends to change it every 10k. Is it because of the claim that you don't need to change until you hit 10k? Kasi diba, once you start/use the engine there's already wear and tear in it? Pieces of metal, dirt etc.. are inside the engine and if you're going to wait for 10k diba ang tagal pa nung mga dumi na naka deposit at patuloy na umiikot sa loob ng engine?

I'm not saying sythetics are bad, it's just that I'm having doubts about its 10k interval claim.

What do you think guys? Discuss!

[B2Bomber]

AFAIK - though a change oil, say every 10T km, is recommended when using synths, you are still required to change your filter every, say every 5T km, which is where the dirt are supposed to be trapped and stay (and hopefully won't recirculate as speculated).hth

[imperialv]

nasa personal preference mo na lang yan.. if you have the extra money - why not... (go full synthetic).. I have a friend who change his CAR's oil every 5K with full synthetic.

ako, I tried doing that 10K with synthetic kaso after my 5K interval, ang dumi na ng oil even if I changed the oil filter. Ayun, after 1 month, I changed the oil again, yun nga lang mineral oil na uli.. I prefered yung 5K interval (mineral) vs. 10K interval (synthetic)

[1D4LV]

considering costs and the need to change the filter by 5k kms, i would still go for the regular oil change using mineral at 5k.

[ghosthunter]

same here... I have my oil & filter changed every 5000km

[Radical!]

same here... I have my oil & filter changed every 5000km

+1
Moreover, I use the cheapest brand of oil within the specs recommended by the owners manual. For me, it's more cost effective and my engines love it.

[OTEP]

Extending the drain interval when changing over from mineral to synths is a popular form of misinformation. Ang nagpapakalat nito ay ang mga marketing arm at dealers ng synthetic fluids to justify the added cost to the consumer. No offense meant, may kakilala din akong may mga talyer. Pero that's the only way they can push synths on vehicles that run on mineral based. If they said all the other benefits (yes there are other real benefits) but still prompted an oil change at the manufacturer's interval, hindi din bibilhin.

It's not the breakdown of the oil that requires you to drain it, it's the amount of suspended debris that is in the oil. Most of which are too small to be caught by the oil filter and by oil's inherent chemical structure become suspended in the oil.

Personally, I just use a good mineral based oil (one that meets or exceeds my vehicle's need) and change it at the manufacturer's recommended interval (5,000kms in my case). Bakit pa ko magtiya-tiyaga with old oil in my engine? Mas ok yung parating fresh. :D

[B2Bomber]

makes sense to me. hehe. kaya ako, regular intervals pa rin and as long as it meets my vehicles prescribed oil spec din. reminds me of an oil company's slogan which goes something like..."refresh your engine" or something. memory gap... hehe

[recklus]

mineral oil every 5k kms for me, pasok sa budget eh. pero if ever i can afford synthetic oils, i'd still change it every 5k kms.

[Galactus]

Castrol Magnatec ako. I change oil every 7.5 kms before, but now balik siguro ako to the 5k km interval. When I had my T-belts replaced at Speedyfix 2 weeks ago, binuksan nila yung valve cover. May varnish yung engine internals. Di ko lang alam kung dulot yun ng Magnatec, kasi 2nd owner ako.

[speedyfix]

it really depends on how long you take to reach 10k kms. if it's less than a year, then full syn oil will be ok and there will be no detrimental effects to using it.

no need to replace the oil filter every 5k kms either assuming it's a decent brand.

[luloym]

Brought my '07 civic to casa for 1000 km check-up this weekend. The service advisor said that even if the new civic uses mineral oil, the next change oil should be after 10,000 kms. Is this true for the new civic?

[Si 06]

Oil change will always depend on the external driving conditions. If you are using a turbo charged car or always driving on dusty roads you should change your oil more often. Oil filters should always be replaced (regardless of brand) when changing oil mineral or synthetic because that is where all the dirt is trapped. Imagine spending 2,500/gal synthetic oil and using the old dirty oil filter. Its like taking a bath and wearing the old soiled stinky clothes after. Air filters should also be replaced at regular intervals because the dirt that passes the air filter reaches the oil that rubs against the cylinder wall.

IMO if you love your car don't scrimp on oil and filters. This applies to all vehicles old, new, diesel or gas.

[OTEP]

But also don't fall for the salesman's salestalk that you are 'scrimping' when you only use the manufacturer recommended oil grade instead of the Php2,500/gal synthetic they sell. :D

[Si 06]

I have been using Redline synthetic oil for the past 9 yrs and they don't have any salesmen that I know of. Prices have risen through the years and I get my supply directly from the importer Superior Motors. My '98 v6 pajero has 150k+ on the clock and has never been overhauled. I used this vehicle for pulling my jetski/atv trailer from 98-01 every weekend and occationally some suv's that get stuck in the sand including expedition's because they used street tires. 4 stroke synthetic Redline all the way but their 2 stroke sucks. Maxima castor 927 for 2 strokes. The pajero is still with me.

[4JGtootsie]

Mineral, change oil filter every other oil change, 4-5Tkm intervals.

[warrior]

My take is if you're gonna keep you're car for a long time, about 7 to ten years or so, then synthetics is the way to go. I have an 89 galant ss and used mobil 1 since 60k kms, and the engine note sitll sounds high pitch(matining pa rin) change oil and filter every 5k kms and idles very smoothly still. No overhaul yet.

Also it's worth the investment if you drive your car hard always

[XTO]

mineral based multi-grade type and filter every 6 mos. with less than 4K kms.

[mcbry]

mineral base oil (highest grade or one that meet my cars specs) every 5k kms.

[speedyfix]

for the fd civic, most of the people i know replaced the oil right after the 2-3000 km mark or when the engine was fully broken in. after replacing it with full syn 5w30 oil they said the milage improved...