thicker oil

[coolvxss]

Hey guys. i have some noise coming from under rocker covers somewhere, and i read somewhere that putting i thicker oil in might help. At the moment im using castrol magnetec oil which is 10w40. What oil would you recommend. I seen castrol gtx3 is 15w40, would that be good? or should i go even thicker? cheers

[Emackulation]

Usually depends of how tight your engine is and how many kays its done and how many leaks you have. I would say 10 40 is way too thin for your car, hence your valve noise, next service stick some 20w-40 or 20w-50 in there and see if she quiets down.

[iRiot]

you should be using at least 20W50

[coolvxss]

k cheers guys. i will go out and buy some now

[Morton]

Yeah, I wouldn't reccommend Magnatec or any thin synthetic oils for a VN/VP engine. Stick with a good 20w50 Penrite oil for around $25.

[azzfox]

Just had a look at the penrite site.. it recommends "HPR 15" which is 15W-60 for VN-VR V6

[Emackulation]

Just had a look at the penrite site.. it recommends "HPR 15" which is 15W-60 for VN-VR V6

Yeah, but as he said he can hear noise from his rockers, so im thinking he needs at least a 20w.

[iRiot]

if you use to thin it will stuff you rockers and your vavles will start sticking

[bradcad]

OK guys


15w will have nothing to do with lifter noise. 15w is only a rating at COLD. very cold. if you want thicker you have to look at the second number. 15w60 is far thicker than 20w40. even 10w60 is far thicker, as the second number is the relative rating.

Lifter noise is caused predominantly by lack of oil pressure, due to wear or carbon/ sludge deposits. Thicker oil will help. Best look at some thicker oil which has good detergent properties as well. If you are finding more lifter noise say 3-5000 k's after an oil change your lubricant is failing.

[coolvxss]

just put some 20w50 in. still makes the noise. dont no if its lifters or what. its hard to explain what kind of noise its making. if the car is in neutral and i rev it constantly at about 2000rmp, you can hear it pretty loud, if its reving any more or any less it sounds normal. And when im driving around in say 4th gear at 60, and get to a hill, it does it then when under load. i dont know what the prob is. might just take time for my new oil to work

[iRiot]

it could be sticky vavles or anything
sorry i cant help

[coolvxss]

its done it since i got my car, 2.5 years. But might have got bit worse. But car still runs really good.

[nathans1987]

most old motors make some noise lol its nothing to worry about if its done it for a while n still runs good. if it makes a tapping noise because of big ends or somthing it wont last long haha!

[andyli]

Yeah, I wouldn't reccommend Magnatec or any thin synthetic oils for a VN/VP engine. Stick with a good 20w50 Penrite oil for around $25.

I used penrite gas and Gas10 for a while, they are great, gas 10 is a bit thin. just got a new car and want to sell the VN, do not want to spend too much on the oil so put Shell 20w-50 in, drove for 1500k, that is a ****, the engine is very loud and rough. before the penrite gas which is 20w-60 served the old lady pretty well. just a word of advice, do not save money on the oil, does not wortht the 10 or 15 bucks.

[fu2]

i use HPR 15 penrite in the vp with 187000 on the clock. work well from what i can tell

[Full Spectrum]

Just had a look at the penrite site.. it recommends "HPR 15" which is 15W-60 for VN-VR V6

My brothers using that in his BA I6 sounds like a 500,000km VN


I'm using a 15-40 in the VP right now little noisy at lower revs but runs a treat,
Using 10-40 in the VT no noise what so ever.

It's common in the older Buicks to get some hydraulic lifter noise, My old VP does it it can be as warm running temp, Stop the car and it will tap then at times it will tick or ping it's one of them not to loud but i can hear it outside standing, But power is there it runs right still, That might be the problem?

Chuck some of that additive that stops lifter noise?.

[Morton]

just a word of advice, do not save money on the oil, does not wortht the 10 or 15 bucks.

And good advice it is. Never a truer word spoken.

[bradcad]

SLICK- Either that or a thicker oil with good detergent qualities

[crazywog]

yeh i agree there 20-50 works well with any engine. i also heard shell helix is the best for holdens anything else is just garbage.

[Full Spectrum]

SLICK- Either that or a thicker oil with good detergent qualities

Thats right i remember you talking about that and helping removed contaminants from the motor which might be helpful to coolvn.

[Keesh]

yeh i agree there 20-50 works well with any engine. i also heard shell helix is the best for holdens anything else is just garbage.

take out the sponsor list in your nickname loll you dont no any of those people,
from nick @ preston automatics

[Keesh]

any commodore over 200,000 needs 20w 50 any main brand is fine as long as your using the same brand consistantly

[bradcad]

any commodore over 200,000 needs 20w 50 any main brand is fine as long as your using the same brand consistantly

good point- i agree to find one that works for you and stick with it

[andyli]

also it might be that you used synthentic for a while and then changed to mineral and this will make some problems. I will change it back to semi later.