Isuzu Dmax Owners [continued]

**rna800** · January 4th, 2013 06:52 PM

*d_mac: Sir, just a question.

Which among the following fully synthetic oils gave you the best performance if ever you have tried all of them: Motul Specific Crdi 5w-40, Torco SD-5 15w-40 and Mobil Delvac 5w-40? Wanna try the Royal Purple oil too but perhaps after the 100k km PMS. Plus Speedyfix is far from my location.

For the first time in my PMS, I have used a fully synthetic oil and Isuzu Commonwealth uses the Torco SD-5 15w-40 since they said that they don't use Motul Specific Crdi anymore. It's kinda pricey if I am not mistaken at 780 per liter at 8 liters. I wanted to just buy outside the dealer since it's about a couple of hundred peso cheaper but I find it such a trouble buying oil, look for a shop that would do the oil change since Isuzu Commonwealth wouldn't allow bringing your own oil, then bringing the car back to the dealer for the 80k km PMS. I find it such a hassle.

Truck has clocked more than 82k kms already and it still runs like new, more responsive and much smoother especially when I started using Unioil's Euro IV and thank God, it has been problem-free even though the CEL is lit up for more than a year already since Isuzu Commonwealth for some reason couldn't get to stock an EGR in their inventory.hehe CEL has been on my dash since Dec. of 2011 and the truck has ran I think almost 30k kms without stalling and no problem at all. I am not sure if I would feel a better performance now that it will run with a fully synthetic oil. I have already placed an order form again for that elusive EGR and I can't wait to replace and really feel the full power of it again coz I know once that CEL is lit up, it affects the performance of the vehicle.

Oh my bad, there was one problem that I faced... It's the stereo. It suddenly didn't wanna work.hehe Perhaps a busted fuse or just a loose connection somewhere. At least it's not the car that has a problem.hehe

**padipadi** · January 18th, 2013 11:46 PM

i already sold my dmax LS Matic last year. mga bros, baka interested kayo sa motolite battery ko (few months lang nagamit: less than 3 months), size 3sm, polarity for dmax po. kindly text me (0947-5961166). selling it for very cheap. thanks.

fr.juvi
pasig-taguig area

**cooljay21** · January 23rd, 2013 11:58 AM

dapat bang sundin ang tire air pressure na nakasulat sa gilid ng drivers door side ng Dmax boondock? im using 265/70 R16 and the car tire air pressure na naka sulat sa side door is 29 psi front and 36psi rear..ano nilalagay nyong psi sa 4 tires? tnx...

**d_mac** · January 23rd, 2013 11:43 PM

Originally Posted by cooljay21

dapat bang sundin ang tire air pressure na nakasulat sa gilid ng drivers door side ng Dmax boondock? im using 265/70 R16 and the car tire air pressure na naka sulat sa side door is 29 psi front and 36psi rear..ano nilalagay nyong psi sa 4 tires? tnx...

Give or take, around 30 psi front and 37 psi rear. If loaded with 2 to 3 dirt bikes plus people, or people and stones or gravel, 38-39 psi. Max pressure rear when loaded at 41 psi according to my guide sheet.

Tire pressure adjustment in changing seasons you might ask? Well there are only two seasons in Philippines, hot and beri beri hot hehe

Cheers!

**d_mac** · January 24th, 2013 12:12 AM

Originally Posted by rna800

*d_mac: Just a question.

Which among the following fully synthetic oils gave you the best performance if ever you have tried all of them: Motul Specific Crdi 5w-40, Torco SD-5 15w-40 and Mobil Delvac 5w-40?

Don't know about Royal Purple, or even say the German-motor oil brand, LiquiMoly.

So far, i prefer Mobil1 Delvac 5W-40, mainly because between the three, it has better kinematic viscosity at different temps, viscosity index, and it got the highest TBN at 12.0. Motul and Torco, respectively, contain about 8.0 mg KOH/g. I may say that is way substantial enough, plus buffer, to protect your engine from the effects of sulphur oxidation formed during the pressure combustion process.

To explain briefly, kindly take note that 12.0 mg KOH/g means also 12.0 ppt KOH, or that is, 12.0 parts per thousand potassium hydroxide per gram of engine oil to neutralise/control the acid formed during combustion process, say with your diesel fuel containing 300 parts per million sulphur. With the Mobil1 oil, therefore, it takes MORE TIME before all its alkaline content (KOH) gets depleted thru series of neutralisation, than when you use the other two oils.

Cheers!

**d_mac** · January 25th, 2013 12:32 AM

Not mine, never had a "hood-scoop" D-max (wish i had though).... but it's sure nice to post a pic of it here....

Cheers!

**Uncle Nick** · January 25th, 2013 10:48 AM

Originally Posted by d_mac

Not mine, never had a "hood-scoop" D-max (wish i had though).... but it's sure nice to post a pic of it here....

Cheers!

I just love this truck!!! ........the hood scoop (and what it means), the paint scheme, and especially the wheels.

Thanks for the post, my friend.

Ciao!

Uncle Nick.

**rna800** · January 25th, 2013 11:43 AM

Originally Posted by d_mac

Don't know about Royal Purple, or even say the German-motor oil brand, LiquiMoly.

So far, i prefer Mobil1 Delvac 5W-40, mainly because between the three, it has better kinematic viscosity at different temps, viscosity index, and it got the highest TBN at 12.0. Motul and Torco, respectively, contain about 8.0 mg KOH/g. I may say that is way substantial enough, plus buffer, to protect your engine from the effects of sulphur oxidation formed during the pressure combustion process.

To explain briefly, kindly take note that 12.0 mg KOH/g means also 12.0 ppt KOH, or that is, 12.0 parts per thousand potassium hydroxide per gram of engine oil to neutralise/control the acid formed during combustion process, say with your diesel fuel containing 300 parts per million sulphur. With the Mobil1 oil, therefore, it takes MORE TIME before all its alkaline content (KOH) gets depleted thru series of neutralisation, than when you use the other two oils.

Cheers!

I went with the Torco for its 80k km PMS. So far so good. I also had my EGR cleaned by Central Diesel Clinic instead of going with the advise of Isuzu Commonwealth to replace it which costs 19k+ and that is without labor. Maybe on my next PMS, either I will try the Mobil 1 Delvac or the Royal Purple especially now that I got my Fleetguard oil filter from sir bayen.

Yesterday as I was cruising, I noticed that the engine was kinda rattling, clattering, imagine the sound of a torque wrench when it is being used, and sort of humming. It will just suddenly appear but mostly on the first gear and if the car is moving while on the 3rd or 4th gear around 60 kph. It doesn't happen all the time though. One thing I know is that I heard that sound when the MIL was lit but before, it was really noticeable at all gears and the idling was a bit rough. However, now the MIL doesn't lit so I don't know what is causing either I got a bad fuel from Unioil or the EGR again or perhaps the SCV, I have no clue. It started yesterday afternoon. This morning, it happened again but disappeared instantly. I don't feel any problems or unusual with the car at all.

Do you know what might be causing it?

**rna800** · January 25th, 2013 11:45 AM

Originally Posted by d_mac

Not mine, never had a "hood-scoop" D-max (wish i had though).... but it's sure nice to post a pic of it here....

Cheers!

Whew! Looks really good and mean! I love the grille! Then the black paint, hood scoop and the wheels.

**d_mac** · January 25th, 2013 03:40 PM

Originally Posted by rna800

I went with the Torco for its 80k km PMS. So far so good. I also had my EGR cleaned by Central Diesel Clinic instead of going with the advise of Isuzu Commonwealth to replace it which costs 19k+ and that is without labor. Maybe on my next PMS, either I will try the Mobil 1 Delvac or the Royal Purple especially now that I got my Fleetguard oil filter from sir bayen.

Yesterday as I was cruising, I noticed that the engine was kinda rattling, clattering, imagine the sound of a torque wrench when it is being used, and sort of humming. It will just suddenly appear but mostly on the first gear and if the car is moving while on the 3rd or 4th gear around 60 kph. It doesn't happen all the time though. One thing I know is that I heard that sound when the MIL was lit but before, it was really noticeable at all gears and the idling was a bit rough. However, now the MIL doesn't lit so I don't know what is causing either I got a bad fuel from Unioil or the EGR again or perhaps the SCV, I have no clue. It started yesterday afternoon. This morning, it happened again but disappeared instantly. I don't feel any problems or unusual with the car at all.

Do you know what might be causing it?

Man, these are one of those times i wish i knew all the answers in the world! Ask Niky, he has an Isuzu as well, and he might just be of great help. He's a wealth of practical advice as his been known to be a hands-on tuner and a writer at the same time. Or, ask also GTi, he has a Trooper 4JX1-TC. He's another good practical-type of guy....

Never had that similar problem before (or so far) that i could derive answers from.... Was it rather pinging (ping, ping, ping)? Was the engine under load? Does it sound like the mixture is lean of fuel and rich of air, thus pinging, which i doubt anyway?

The problem also, in your case, is that it happens only far-in-between, in rarity, that when you take it to a diagnostic-test, it won't show JEEZE! ....Just when you need to have it figured out

You may have the suction-valve checked (any pre 2010 D-max has this small SCV, by the way, had mine changed to the current for free though at the Isuzu centre), and they can tell for sure if it's already restricted or something, and you may even have your EGR checked again if it's still in integrity.... That electronic-push rod piston (i don't know the proper name of it) there is not that durable might i say when one "could have" tinker it, unlike the mechanical-type EGR that goes with the Crosswind. The only time, in my case, the check engine light lit up in my so-called CRDi D-max 3.0 Ddi-iTEQ hehe is when my EGR needed replacement. After that, none-or-whatsover....

Cheers and goodluck chief!