15W-40 vs. 5W-40 Oil Type

**Ry_Tower** · March 2nd, 2011 01:00 PM

Originally Posted by miked

a little bit confused dearest paps....been used to Delo Gold ISOSYN brand....want to confirm if what i bought (Delo gold multigrade isosyn) is a mineral, semi-syn or fully-syn? my thought is that it is a Group 2 mineral oil refined by using the so-called "ISOSYN" of caltex.....

long story short, a mineral oil refined using refining technology intended for synthetics...am i still on the right track here?....btw, i prefer mineral for some personal reasons and a little bit of technicalities.....

Mineral pa rin yang multi-grade but definitely better than the monograde na delo gold.

**miked** · March 2nd, 2011 05:08 PM

Originally Posted by Ry_Tower

Mineral pa rin yang multi-grade but definitely better than the monograde na delo gold.

thanks....hindi rin kasi sinasabi sa label ng container pero napansin ko yung mga synthetics nakaindicate na syn...sa mga non-syn hindi nakaindicate.......plus my basis ever since is the price if i'm in doubt.....

Delo Gold Isosyn multigrade for P200 a liter compared to other mineral oils in other gas stations, hindi nagkakalayo.....the synthetics costs about P300 or P400 plus a liter.....

**Ry_Tower** · March 2nd, 2011 05:19 PM

Originally Posted by miked

thanks....hindi rin kasi sinasabi sa label ng container pero napansin ko yung mga synthetics nakaindicate na syn...sa mga non-syn hindi nakaindicate.......plus my basis ever since is the price if i'm in doubt.....

Delo Gold Isosyn multigrade for P200 a liter compared to other mineral oils in other gas stations, hindi nagkakalayo.....the synthetics costs about P300 or P400 plus a liter.....

AFAIK; 10W = semi-syn, 0w or 5W = pwede na mag-claim na fully syn

Yung Mobil P800 yung fully syn. Mas mura yung sa Shell if ever gusto mo fully syn. P300 semi-syn naman nila.

**Reepicheep** · March 2nd, 2011 05:33 PM

Originally Posted by Ry_Tower

AFAIK; 10W = semi-syn, 0w or 5W = pwede na mag-claim na fully syn

Not really sir. You can't base oil composition on viscosity rating. Example, ang Motul may 5w40 (CRDi Specific), 10w40 (H-Tech), 0w20 (300V High RPM). Lahat yan 100% synthetic.

**Ry_Tower** · March 2nd, 2011 05:36 PM

Originally Posted by Reepicheep

Not really sir. You can't base oil composition on viscosity rating. Example, ang Motul may 5w40 (CRDi Specific), 10w40 (H-Tech), 0w20 (300V High RPM). Lahat yan 100% synthetic.

ah ok, i stand corrected.

**kkreuk18** · March 9th, 2011 12:47 AM

Originally Posted by XTRM_Ryder03

Mga Masters, tanong ko lang po, what is better for A/T Diesel Turbo Engine for Crosswind a 15W-40 Fully Synthetic Oil or the 5W-40 Fully Synthetic Oil and what are their advantages and difference. Maraming salamat po sa mga magiging advise ninyo...

Don't use synthetic oil for the crosswind. Alam ko di recommended yang synthetic sa 4ja1 engine. Use Mobil delvac MX 15w-40

**SiRbossR** · March 9th, 2011 01:23 AM

the best oil for viscosity for the Crosswind is the 20w-40 rating.

**hein** · March 9th, 2011 01:59 AM

Originally Posted by Ry_Tower

AFAIK; 10W = semi-syn, 0w or 5W = pwede na mag-claim na fully syn

Sorry, but that is PURE BS.

**miked** · March 9th, 2011 08:52 AM

Or you may look at the PDS/MSDS of the engine oil....sometimes it is indicated if it is a Group 1-3 (Mineral) or Group 4-5 (Synthetic) base oils...

The SAE viscosity is not the basis for the type of blend rather it's the base oil used....

I prefer using "mineral + regular oil changes" than "synthetic + wait until 10k or 1-2 yrs before oil change even with dirt circulating inside the engine".....there's a bigger possibility of dirt becoming lumps with synthetics than minerals due to longer oil change intervals....

**Ry_Tower** · March 9th, 2011 09:39 AM

Originally Posted by hein

Sorry, but that is PURE BS.

Of course there are exceptions to the general rule but it is is rather a guide to how we should know whether an oil is somehow semi-syn or fully syn.

That is why I said as far as I know and I am not guaranteeing it. This is just a quick guide lang naman. http://www.carbibles.com/engineoil_bible.html