Jump to content
SAU Community

Recommended Posts

As mention in topic, my car feels slightly more responsive and smoother after,

1) oil change (same brand, Royal Purple HPS, but the workshop used 5W30 instead of the usual 10W40) Not sure if the ones I have been using is HPS or not.

2) spark plug change from platinum to iridium (Denso)

3) oil filter and fuel filter change

4) clutch bleeding (not asked for but they did it cause they suspect my clutch is worn but its not)

Does any of the above affect the response and smooth-ness of the engine much? I told him 5W30 should be fine since its winter but next time I would like to have 10W40 again. Having said that he assured me a good engine can run 5W30 without issues at all unless its blowing smoke.

Advise pleaseeeee. Thank you.

Variables:-

What was the condition of your old plugs Brandon?

Did you blow through the old fuel filter to see if the residual fuel was discoloured?

Incremental change of old oil to new (and thinner), can result in a noticeable +ve smoothness.

Did the clutch bleed result in extra bite on take-off?

  • Like 1

you bet, by the time you change your oil most the additives would have gone off bla bla same with coolant, brake fluid and filters, the more you look after your car the better it will run and the longer it will last!

I didn't not get the chance to see the plugs and filter unfortunately.

Dont get me wrong, the car has never given me any issues other than the usual failure due to age/wear. The 2 thing I suspect is the thinner oil and possibly plugs.

The plugs looks clean from previous service but its been awhile since I change them. However, the gap may be too big? I think it's 1mm. Maybe iridium gives a better spark over platinum?

The clutch is still easy to drive being a coppermix. They just bleed it cause they thought the free play was too much. However, it does feel firmer and slightly stiffer.

All in all I'm happy that the car is running smoother. Not saying it's bad before but if the oil is the key, are there any potential issue which can be fatal to the car by sticking with the thinner oil? Or should I go back to 10w40 for my next service since it'll be summer?

No probs with the current oil with your Kms.

I'd just ask a friend to drive your car whilst you follow it; and you check the smoke coming out of the exhaust. See if there's any more than before.

No probs with the current oil with your Kms.

I'd just ask a friend to drive your car whilst you follow it; and you check the smoke coming out of the exhaust. See if there's any more than before.

Right. Thanks. I'll keep an eye on it this weekend. But driving around yesterday doesn't seem like there is. It'll have smoke in the first gear for once (like cleaning the exhaust carbon) if I floor it but everything else seemed pretty normal.

No idea on what sort of mods/engine you have, but flooring it and black smoke = running rich (standard computer does that).

5W-30 seems a bit thin, but once again no idea on what sort of engine you have. I would stick to #W-40 or #W-50.

Just an unopen N1 engine.

Like I said before, I'll make sure its 10W40 for the next service. This time should be ok since its winter and I doubt it'll be much of an issue especially the N1 oil cooler is quite big. Even during summer it rarely goes over 75-80degrees on the gauge. Most times it doesnt even move over the 70

No idea on what sort of mods/engine you have, but flooring it and black smoke = running rich (standard computer does that).

5W-30 seems a bit thin, but once again no idea on what sort of engine you have. I would stick to #W-40 or #W-50.

after spark plug change my car started VERY well and idled + drove smoother as well. after a fuel filter change, it felt like it was a little smoother while idling too.

but, always keep in mind the placebo effect!

after spark plug change my car started VERY well and idled + drove smoother as well. after a fuel filter change, it felt like it was a little smoother while idling too.

but, always keep in mind the placebo effect!

no shit about the placebo effect! I would seriously doubt a fuel filter change would make any difference at idle, when the fuel requirements are at their lowest.....

Not sure but for RB26, you'd do the pulley/idler/tensioner whatever you call them when you change the water pump. Just to save the time and effort.

I'm about to change my water pump on my stagea for the first time do I need to remove the crank pulley to accomplish that or am I able to avoid it?

5W-30 should be fine. It's more when under load that the thinner oil would start to no protect as much as a thicker oil. Nissan oil is 7.5W-30 for 200SX anyway.

32 gtr's are the same. Factory they run 7.5-30. A car with a new rb would be fine. An old engine with 100000 will have bigger clearances thus requiring a thinker oil.

Reply to this as well ^^^^^^^

Just an unopen N1 engine.

Like I said before, I'll make sure its 10W40 for the next service. This time should be ok since its winter and I doubt it'll be much of an issue especially the N1 oil cooler is quite big. Even during summer it rarely goes over 75-80degrees on the gauge. Most times it doesnt even move over the 70

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Yeah, the latter. No diff should have a centre replaced without checking clearances because its unlikely to be the same as whatever came out. Not that that stops most people just checking a new centre in
    • Major thread necro but how bad of a job is it to DIY? Looking at it online it looks like if you reuse your ring and pinion as long as those are in good condition it should be fine to just pull the axles/front cover and replace the diff that way? Or should I be replacing everything and doing preload measurements/gear mesh testing like the factory service manual mentions for the rear diff?
    • in my list I had the R33 GTR as the best Skyline. Infact I had all GTR's (33>34=32), the NSX, the GTO, the 300ZX, the 180SX, the S15 better than the FD RX7. I had the MR2 and the A80 as 'just' better. I also think the DC5R Integra looks better but this is an 01 onwards car. I also think the FC>FD. It's almost like aesthetics are individual! The elements @GTSBoy likes about the FD and dislikes about the 180 are inverse in my eyes. I hate the rear end of the FD and it's weird tail lights that are bulbous and remind me of early hyundai excels. They are not striking, nor iconic, nor retro cool. The GTO has supercar proportions. I maintain these look much better in person (like the NSX) especially with nice wheels and suspension which is mandatory for all cars pretty much. Some (or all) of these you have to see in person to appreciate. You can't write a car off until you see one in the flesh IMO. Like most people we probably just like/dislike cars which represent certain eras of design or design styles in general. I also think the 60's Jag E type looks HORRIBLE, literally disgusting, and the 2000GT is nothing to write home about. FWIW I don't think the Dodge Viper Gen1's have aged very well either. You can probably see where I rate bubbly coupes like the FD. I know we're straying now but the C4 and C5 absolutely murder the Viper in the looks department as time goes on, for my eyes. Wouldn't surprise me if people who love the FD, also love the MX5, Dodge Viper, Jag E Type, etc etc.
    • I used to hate R31s, and any of the other Nissans that led up to it, and any of the Toyotas with similar styling, because of the boxiness. They were, and remain, childish, simplistic, and generally awful. I appreciate R31s a lot more now, but only the JDM 2 door. The ADM 4 door (and any other 4 door, even if they are unique compared to our local one) can eat a bowl of dicks. The Aussie R31 is also forever tarnished by their association with stereotypical bong clutching Aussie R31 owners of the 90s and early 2000s. I think the Nissans of the 70s (other than 120Y/180B/200B) are far superior looking to the 80s cars. The 240K era Skylines are boss. The same is broadly true of Toyotas. Hondas don't ever register in my thinking, from any era. Mitsus are all horrid shitboxen in any era, and so also don't register. Subarus are always awful, ditto. Daihatsus and Suzukis also don't generally register. They are all invisible. I think the SW20 MR2 looks fiddly. The 3000GT/GTO is like that but way worse. Too many silly plastic barnacles and fiddly gimmicks ruined what could have been a really nice base shape. Kinda-sorta looks like a big heavy ST165 Celica coupe (and I'm not sure if that's a good thing or a bad thing). I think the 180SX is dreadfully bland. It's not bad looking. But it has no excitement to it at all. It's just a liftback coupe thing with no interest in its lines, and bad graphical elements (ie wide expanses of taillight plastic on the rear garnish). The S13 Silvia is a little better - getting closer to R32 shapes. But still....bland. S14? Nope. Don't love it. S15...a little better. Probably a lot better, actually. Benefits from not being like a shrunk in the wash R34 (where the S13 was a shrunk in the wash R32 and the S14 looked like a Pulsar or something else from the stable on Nissan mid 90s horrors). The Z32 was hot as f**k when it came out but hasn't aged as well as the A80. Keep in mind that I think the R33 is the most disgusting looking thing - and out of all the previous cars mentioned is objectively closest to my precious R32. It's just....real bad, almost everywhere you look. And that is down to the majority of what was designed in the 90s being shit. All Nissans from that era look like shit. Most other brands ditto. In that context, the FD absolutely stands out as being by far the best looking car, for reasons already discussed. Going behind the aesthetics, the suspension alone makes it better than almost any other car.  
    • If they just called it the "Mazda Tiffany", it would have been spot on.
×
×
  • Create New...