If car already consume engine oil , we should thicker engine oil , right ? But , i feel that when i use catsrol 20w50 , the car is sluggish , and the fc is bad . Anyone can suggest engine oil give better response and fc for my old car ? my car is old saga 2004.

my car 10 years already..currently using castrol magnatec 10w-40...

Buy those 15W40 engine oils in 5L/6L/7L packing. Top up when necessary.
For example, Rimula R4X (5L), BHP Trans Super (7L), Mobil Delvac MX (5L) etc.

Engine Makan minyak no need top overhaul.
In Hokies just change the ba kah ni. I Duno wtf is that but it's something that seal the piston thing.

If kul every workshop sure say need top overhaul

ba kah ?

will it hurt the engine by using slghtly thinner oil such as 15w40?

rimula is shell ? i only heard about shell helix

rimula r4x is heavy duty EO...for diesel engine..but i use it on my motorcycle..

petrol engine can use ?

also can...my lc135 can use it..mesti boleh..

Try HDEO 15W40 > PCMO 15W40 > 10W40.

Helix HX7 10W40

You should be looking into the source of that excessive burnt lubricant, otherwise you might later have other issues like wet/prematurely worn plugs, clogged PCV, sludge clogged cylinder head, excessive blow by, dirty carburetor/engine bays etc. Having thicker lubricant is only a temporary solution if its not too bad, and one of the consequences of using thicker oil (especially on higher worn engines) is poorer performance, followed by poor fc as you have encountered.

FYI 2004 is not that old. My older 2000 Corolla is still running on 15w40 lube.

Agreed.

My crv year 1996 with BOT still uses 5w30 full syn. oil. Old doesn't mean anything if u take good care of your car and follow the maintenance schedule on oil change. However once there is indication on oil leaks or engine oil burning, do send it for fixing. Cars burning engine oil are damn annoying and coupled with damn selfish drivers by emitting the oily fume all over others and on the road.

iswara engine original spec is to use xW40 engine oil, so no hurt at all.
Rimula is name of heavy duty engine oil of Shell.

Agreed.
My 1985 Corolla XL also using 15W40, Kendall Super-D XA HDEO.

I saw my another old saga 1991 engine bad stated 20w50.... Perhaps 2004 engine is different?

Ba kah ni is valve stem seal la, that consider top overhaul la.

So, 15w40 is OK for my car although there is leaking?

I still dont understand how to choose engine oil...

eg 10w30 vs 10w40

theoretically 10w40 means the oil will stay in better condition compared to 10w30 when the engine is running hot like long distance journey right?
but if city drive its its better to use 10w30 because its less thick so engine need less effort to move?

will change thAT thing soon.. i expect below RM200

What's your car mileage and what car are you driving ? If your car mileage is not too high top overhaul will solve oil consumption problem but if it's too high mileage sometimes need to do full overhaul.

205k km

Last time my xtrail 2.5 2003 with 240K km use Total 15W-50, after 2000km of drive, a quarter of oil gone. Then next oil change switch to Shell HX3 20W-50, after 4000km drive oil just drop a little bit only.

nowadays they no need to do so much job ady ..
got device to clamp the spring then can access to change liao .
my workshop dont call that top overhaul .. hahaha

in KL i ask everyone say need to overhaul.. starting price is RM400 and if got other rosak need add more ..
nowadays i tried to avoid repair car in KL .. semua try to potong leher wan .

My 1.5 wira vdo 2005 is using Castrol 5w-30 Fully synthetic

No overhaul done yet, mileage 155k

my saga 1985 using castrol magnatech semi

old saga recommneded oil is 20w50 , right ? I saw one 1991 saga stated 20w50

Engine wear already happen. No point u use more expensive or better oil. It is waste of money. You will keep burning those 10-15/40 oils no matter how expensive it is. Its either u keep using the current 20/50 and live with it being under powered or go for overhaul. White smoke usually means piston rings are done already.

if not mistaken xw40...but since i get it from my father since 4 years ago...only use semi syn caltex/shell w40...so far is okay...

standard old car

For 2 or 3 decade-old cars I usually just hantam cheapo 20/50 and just live with the underpowered-ness

No colour smoke noticed...

If no smoke, that means you should have a leak. Engine oil does no dissapear without a trace. Its either burnt up or leaking.

Check for leaks, droplets of leaks daily will result in substantial loss of EO in time. Either that or get someone to watch the exhaust when u throttle at idle. Some cases where the burning of EO is minimal, smoke only detected during acceleration. However one clear sign is the smell of burnt EO which is very obvious even though smoke may not be visible.

Agreed.

Is your exhaust tip wet or just black & dry ?

Today I back hometown fix ady. 10am send car in, 6pm only go pick up.

1) Valve seal 1set + labour Rm180
2) Valve cover gasket Rm22
3) Plug Seal Rm24
4) my gear in P sometime cannot start. Need goyang the stick only can start. So service the gear switch Rm30
4) Clean throttle body free

Total RM256

I wondering if in KL will Kena chop how much. All tell me must top overhaul and price start at 600 onwards just to change the Valve seal

This post has been edited by sheahann: Apr 15 2017, 08:57 PM

My old waja 2003, odometer 298k km. Keep using fully Synthetic 5w-40 or 5w-30 from day one.

No oil eat syntoms whatsoever.
Keep change the oil at 12-13k km per interval. Hardly rev the engine on daily use, it known for underpower 4G18 auto.

Real honest mechanic, you have.

Good on you.
I'm currently pushing semisyn Total Energy 10W40 beyond 15K km and going...... basing on Blotter Spot Test results.

Edit:https://forum.lowyat.net/topic/4192241

This post has been edited by zeng: Apr 16 2017, 01:25 PM