Your car's Engine oil

[baludoy]

advice from the nissan gt-r engine production leader

[dr. d]

advice from the nissan gt-r engine production leader

summary.
if you want your engine to last a long long time, i.e., at least 250,000 miles,
using cheap, regular mineral oil and changing every 3000 miles, is better than using expensive oil and replacing it every 6000 miles.
and replace oil filter every other oil change.

replacing engine oil does two things.
it replenishes the oil additives,
but more importantly,
it rids the engine of all those microscopic metal bits that act as sandpaper.

[Dr.Kamiya]

This is a car forum after all so I don't think anyone here is justifying extended oil change intervals (like 10,000km) with the use of fully synthetic oil.

I use fully synthetic, but still follow the recommended 5000km (3000mi) oil change interval. Also replace filter every oil change.

Aside from the engine itself, there are genuine benefits to using fully synthetic oil:

1) For vehicles with DPF/GPF, full synthetic oil will have lower SAPS (sulfated ash, phosphorus and sulfur) which will extend intervals between cleaning and prolong the life of the particulate filter. And those DPF/GPFs can get quite expensive.

2) Mineral oils also tend to have higher phosphorus content and may not comply with more recent standards like ILSAC GF-5, or ACEA C. Using fully synthetic oil can extend the life of the catalytic converter.

[travajante]

This is a car forum after all so I don't think anyone here is justifying extended oil change intervals (like 10,000km) with the use of fully synthetic oil.

I use fully synthetic, but still follow the recommended 5000km (3000mi) oil change interval. Also replace filter every oil change.

Aside from the engine itself, there are genuine benefits to using fully synthetic oil:

1) For vehicles with DPF/GPF, full synthetic oil will have lower SAPS (sulfated ash, phosphorus and sulfur) which will extend intervals between cleaning and prolong the life of the particulate filter. And those DPF/GPFs can get quite expensive.

2) Mineral oils also tend to have higher phosphorus content and may not comply with more recent standards like ILSAC GF-5, or ACEA C. Using fully synthetic oil can extend the life of the catalytic converter.

& synthetics have higher viscosity index. More stable, viscosity varies less as temps change. They are less volatile, too.
I opt synthetic(preferably ACEA C3) & change at the interval I do mineral. Every 5k kms at most.

Sent from my SM-S901E using Tsikot Forums mobile app

[oj88]

If you ask 5 mechanics that question, you're more than likely to get 5 different answers. lol

You can always play it safe and follow the manual to the letter, but that also means adhering to the "X kilometers or Y months, whichever comes first" condition.

So, do you replace the oil with only <1,000km after 6 months?

Has anyone gone through a UOA to find out the OCI sweet spot for their specific engines?

[travajante]

If you ask 5 mechanics that question, you're more than likely to get 5 different answers. lol

You can always play it safe and follow the manual to the letter, but that also means adhering to the "X kilometers or Y months, whichever comes first" condition.

So, do you replace the oil with only <1,000km after 6 months?

Has anyone gone through a UOA to find out the OCI sweet spot for their specific engines?

Check CarCareNut's YT channel. He has seen the ill effects of extended OCIs on the Toyotas he has been servicing. Oil changes don't really cost much, esp when DIY'd.


Sent from my SM-S901E using Tsikot Forums mobile app

[hardwang]

Oil changes don't really cost much, esp when DIY'd.


Sent from my SM-S901E using Tsikot Forums mobile app

Even if not DIY'd its cheap. Meron sa amin malapit, P250 lang labor sa oil change.

I also don't cheap out by using mineral oil. You constantly worry if it can do well with "spirited driving". Full synthetic only for peace of mind. The P1,000 you saved by using mineral oil is not worth it.

[dr. d]

Check CarCareNut's YT channel. He has seen the ill effects of extended OCIs on the Toyotas he has been servicing. Oil changes don't really cost much, esp when DIY'd.


Sent from my SM-S901E using Tsikot Forums mobile app

i've been viewing his videos for some time now.
toyota.
heh heh.

[Vodka]

So, do you replace the oil with only <1,000km after 6 months?

that question was posted in some fb group yesterday. owner drives 1 km to work, 1km back. everyday. uses motorcycle for errands. sees expressway only 2x a year. prime example of short-tripping

in this case the oil should be replaced, maybe even earlier than 6mo. but maybe it's easier to just drive it for a longer period every 2 weeks or so, to boil off the dilution

[oj88]

Personally, I think engine oils should be replaced based on engine run-hours, especially with the type of traffic we have here. I think that is the basis of most vehicles' maintenance reminders. Probably uses an algorithm that's based off the engine runtime and current mileage.

[midnytwarrior]

If you ask 5 mechanics that question, you're more than likely to get 5 different answers. lol

You can always play it safe and follow the manual to the letter, but that also means adhering to the "X kilometers or Y months, whichever comes first" condition.

So, do you replace the oil with only <1,000km after 6 months?

Has anyone gone through a UOA to find out the OCI sweet spot for their specific engines?

Kahit naman sa casa magkakaiba rin sagot. Nun nasa Saudi pa ako un bnew na Camry is walang change oil sa first 1k KMs. Samantala dito meron.

Nadala ko rin yun sasakyan ko dito (not Camry) balik sa casa after 6 months with less than or 1K+ KMs pa lang in between. Sabi nun gumawa, malinis pa daw, pero syempre void ang warranty pag hinde ko nmn pinagawa.

Ilang beses ako nag pa UOA (Camry - Saudi) pero just to find the oil's performance. That time, since nasa oil company ako eh libre UOA. Dito mahal ata.