Engine oil for P6B

WarrenL

Active Member
#41
Re: Egine oil for P6B

Of course I can't comment on how the engine was treated before GF148 came into my possession, but I do know that of all the P6Bs I test drove when buying (they were still commonly available back then), many with similar mileages and histories, GF148 had the best running and best feeling engine of all. Which, of course, is one of the major reasons I bought it. Perhaps it was a Wednesday morning car?

However the experience of the last 13 years is a great recommendation for HPR30.
 

ghce

Well-Known Member
#42
Re: Egine oil for P6B

I dont know what was done to my Rover prior to my ownership but when I bought it long long long ago (about 1988) I flushed the egine and put a dose of Nulon (ptfe/Teflon) additive in from that moment on all my oil changes produced very clean and clear looking oil when drained, the oil used was BP Visco 2000 (or maybe 3000) the car is on the 3rd rotation of the digits.

Graeme
 

WarrenL

Active Member
#43
Re: Egine oil for P6B

dmcsweeney said:
I think i had the only pinto in the world without a ticking cam! I later put it in a 2200SC and had oil leaks within days! Not doing that again.
Dave
I'll read that as meaning you put the Delvac 1300 Super, not the Pinto engine, in the 2200SC... :shock:
 
#44
Re: Egine oil for P6B

How can I check if an oil contains ZDDP? The only 20/50 oils I appear to be able to buy locally are Millers Classic 20/50 mineral oil and Halfords Classic 20/50. Do these oils contain sufficient ZDDP - does anyone know?

Dave
 

SydneyRoverP6B

Well-Known Member
Staff member
#45
Re: Egine oil for P6B

dukespencer wrote,..
How can I check if an oil contains ZDDP? The only 20/50 oils I appear to be able to buy locally are Millers Classic 20/50 mineral oil and Halfords Classic 20/50. Do these oils contain sufficient ZDDP - does anyone know?
Hello Dave,

Unless the information is available from a product data sheet at each website, you will most likely need to phone each manufacturer. Given that the oils are manufactured to meet the requirements of engines produced during the 1960s and 70s when pushrod engines running flat tappet camshafts were common, you would have to expect that each will indeed contain sufficient ZDDP.

Ron.
 
#47
Re: Egine oil for P6B

dukespencer said:
How can I check if an oil contains ZDDP? The only 20/50 oils I appear to be able to buy locally are Millers Classic 20/50 mineral oil and Halfords Classic 20/50. Do these oils contain sufficient ZDDP - does anyone know?

Dave
You won't find a much better oil for these cars than Millers Classic 20W-50.
 
#48
Re: Egine oil for P6B

Good! Because that's what I've put in it. I
ncidentally has anyone had trouble with oil filters? I got a "Mann" filter that was supposedly the correct one for the P6B, but the body of it is too long - I eventually got a "Fram" P25 which is the correct length.

dave
 
#49
Re: Egine oil for P6B

dukespencer said:
Good! Because that's what I've put in it. I
ncidentally has anyone had trouble with oil filters? I got a "Mann" filter that was supposedly the correct one for the P6B, but the body of it is too long - I eventually got a "Fram" P25 which is the correct length.

dave
Yep, the Fram PH25 is the one.

According to the MANN catalogue, the part number listed for the V8 P6 is 'W 936/2' and is 142mm long, which as you say, is too long.

A MANN oil filter that has similar overall dimensions etc but with a length of 93mm is 'W 920/11', as listed for some Rover diesel engines.
Not 100% sure on it's suitability for the V8 yet, but could be worth enquiring about.
*EDIT: Looks like it possibly may not have a non-return valve for a start.
 

SydneyRoverP6B

Well-Known Member
Staff member
#51
Re: Egine oil for P6B

DaveHerns wrote,..
An oil filter for a Montego/Maestro diesel fits .Again I don't know if it has a non return valve
Hello Dave,

When you hold the filter and look at the face of it, where it would attach onto the oil pump front cover, you will see the large centre threaded hole and around the outside a ring of smaller holes. Can you see a rubber seal beneath those smaller holes? If so, that is the anti drain back valve.

In normal operation, oil is pumped through those smaller diameter holes pushing open the rubber seal (the anti drain back valve) passing down through the filter medium and returning up the large centre hole and into the spigot which retains it onto the oil pump front cover. When the engine is switched off, the rubber seal, which is in essence just a flap moves back to its static position sealing off the holes and preventing the oil that is currently within the filter from draining back out. The orientation of the filter on the V8 engine, at least while on level ground also helps in this regard.

Ron.
 

ghce

Well-Known Member
#52
Re: Egine oil for P6B

I am glad that I read this forum as the thought never crossed my mind in the past to prefill the filter on installation :( but to be quite honest how much difference does it make? I know that from a common sence point of veiw it's got to be good but on the other hand my car has been around the clock twice and has 225,000 Kms on the clock and to my knowledge has never had an engine rebuild except for the obligatory cam shaft and rocker shaft replacement in about 1988. It still reads 30+ psi when driving, on hot idle it still reads 1/4 scale and cold start running has 3/4 scale gauge deflection, no noticable engine noises other than whats healty and nice clean engine oil on my belated engine oil changes. On all oil changes I have just slapped in a new dry filter from a completly drained engine which has stood for at least 45 minutes to get every last drop of the old oil out, maybe I am doing something wrong but I have no intentions to touch the engine in the future except for a timing chain and gear change that I may do as a precationary job having read the RPi site dissertations on the factory cog and timing etc and only then if I can summon the energy :mrgreen:

Graeme
 

SydneyRoverP6B

Well-Known Member
Staff member
#53
Re: Egine oil for P6B

ghce wrote,..
thought never crossed my mind in the past to prefill the filter on installation but to be quite honest how much difference does it make?
Hello Graeme,

I imagine that the only difference that would be made by pre filling the filter as opposed to fitting it dry would be that it would take just that little bit longer for oil to start circulating. The pump will draw oil from the sump via the gallery and into the oil pump housing. Running around the oil pump gears it is then forced down through the filter medium and back up through the central spigot prior to entering the engine proper.

Having oil already in the filter means circulation starts just that little bit quicker.

Ron.
 

ghce

Well-Known Member
#54
Re: Egine oil for P6B

Yes it certainly sounds a good practice, it has always scared me on that first start after the filter change as it seems to take a while for the oil pressure to rise (with the attendant bearing rattles) as I say can't for the life of me understand why I didnt prefill the filter first, it's a bit like the wheel thing, 70,000 years with out it but once you have one you can never see why it took more than 1 minute let alone 70,000 years to invent it!!

Graeme
 
#55
Re: Egine oil for P6B

PeterB76 said:
According to the MANN catalogue, the part number listed for the V8 P6 is 'W 936/2' and is 142mm long, which as you say, is too long.

A MANN oil filter that has similar overall dimensions etc but with a length of 93mm is 'W 920/11', as listed for some Rover diesel engines.
Not 100% sure on it's suitability for the V8 yet, but could be worth enquiring about.
*EDIT: Looks like it possibly may not have a non-return valve for a start.
I've had a reply from MANN-FILTERS. They basically said that they cannot recommend an alternative MANN-FILTER for this application due to the differences in by-pass and anti-drain valves and filter media.

At least I've highlighted the issue with their Product Manager, who was very helpful and said that they will look into it. He also kindly suggested the Fram PH25 for now, so that's what I'll stick too I think.
 
#56
Re: Egine oil for P6B

ghce said:
Yes it certainly sounds a good practice, it has always scared me on that first start after the filter change as it seems to take a while for the oil pressure to rise (with the attendant bearing rattles) as I say can't for the life of me understand why I didnt prefill the filter first..

Graeme
I normally pop the LT wire off the coil and crank it for a few seconds after an oil change, not enough to flood it, but just until the oil light goes out. I then put the wire back on and start the car. That way the oil pressure come up much quicker when you start the engine, and no rattles
 
#57
Re: Egine oil for P6B

darth sidious said:
I thought this on the Penrite site is/was pertinent to the discussion.

http://adjix.com/jsq7
The guy who run's the uk penrite company, John Hankins, lives a few hundred yards from me, I know him! Nice chap, has an eclectic collection of old cars and motorcycles, some of his cars are almost 100years old!

Never knew about the oil thing though!
 
#59
Re: Egine oil for P6B

corazon said:
On a tight budget and really need to do an oil change, new filter at the ready.

Any thoughts on this anyone?
http://www.fluidsinmotorsport.co.uk/twe ... #silkolube
That should be fine, Silkolene is a good brand and that is a great price too.
It's rated as API SF, so the additive package isn't quite as advanced as say Miller's. But it'll still be better than was available originally.
Spot on.
 
#60
Re: Egine oil for P6B

comma sonic 20w50 or comma europa 15w50 is only £12 for 5L and has much more than the minimum zddp and exceed the recommeneded API spec for the RV8, available from most motorfactors on online with a google search.

I hope this helps
 
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