Just been into Halfords or Halfrauds as I have learned to called it on this forum and they have some 5w-40 fully synthetic and 10w-40 semi for £12 for 4litres.

Might be handy for anyone looking to do a couple of oil changes to clean up their engine.

I'm hoping it's suitable, it says oil industry standards Area A3/B4 and API SM CF. Then it says recommended for applications requiring Mercedes MB 229.3, VW 502.00/505.00 and Renault RN0700/710

 

It's not with the other oils it'll probably be on a stand near the entrance..

Surely you need a new filter with every oil change. You would not have clean oil going through an old oil filter :confused1:

After 4000 miles how dirty is your oil going to be? And if you look at most vehicles the service intervals are around 8-12000 miles. Modern filters will deal with a lot more than 4000 miles of use. The oil is passing through the filter and the filter catches the particles in the oil and traps them in the filter.

If you change the oil in the engine then the small amount of dirty oil in the filter is being diluted so it's not like youre using old oil again. Every garage I've ever used for an oil change has asked me if it's just oil or oil and filter I need.

I wouldn't recommend leaving a filter change for more than one oil change but there really is no need to change it every time in my opinion unless the engine is being raced.

I know there will be those who disagree but in my experience with engines and servicing, I've never had an issue with a blocked oil filter in the 23 years I've been driving and I've covered an awful lot of miles as I've been a driver for a living for at least 20 years.

For the sake of £10 to change the filter, it's not like it's expensive, but why would you change something that has plenty of life left in it? If your engine has faults like valve stem seals leaking and is burning oil etc, then of course the filter should be changed as the ash build up and other dirt deposits will be considerably higher, but if your engine doesn't smoke and is running well, there's nothing wrong in going through two oil changes per filter. My recent K&N filter states up to 12000 max miles between filter changes.

For me, I'd ALWAYS change the filter irrespective of manufacturers' claims of longevity. That's more a sales tactic as well as a slight bit if truth. Whilst modern filters have a slightly higher dirty carrying capacity and are now tougher due to their synthetic filter media, the more crap in the filter, the less efficient it's going to be and because there's no direct indication of how much muck is in the filter, it then becomes a complete unknown, even synthetic filters' beta ratio will change over time as oil is constantly forced through it. Couple that with not knowing how the dirt capacity is effecting flow, I'd rather replace. Older cars don't have the tolerances or emissions management of newer cars and the filter will not last as efficiently. So a claim of 'up to 12,000 miles' is a bit of a red-herring in my book.

For the effort in getting the car safely up in the air to get at the sump plug and drain the old oil you might as well

change the filter at the same time. Sure the filter can last longer (and so can the oil I use for that matter) than the

3k miles I might do in a year, but for me it's just piece of mind.

Each to there own Paul. Its your car mate but if I let a garage do an oil change and they said the oil filter did not need changing and it saved me the price of a filter I would be pissed off.

Why would you change an oil filter every time you change the oil? An oil filter and particularly a K&N oil filter should be able to handle two oil changes minimum. I don't understand the "despair" comment?

 

1 ) You don't change an oil filter on every oil change, it's not necessary.

 

2) Today's modern filters are very capable of lasting two oil changes

 

3) I've owned cars in the past that have never had a filter change!

 

I drive my Z daily and she's well maintained, she isn't over pampered or put to bed with a blanket and a hot water bottle.

 

 

Well NemesizX some bold and somewhat controversial comments there, what I would say in response the thread been on this forum is all about the 300zx not any other new modern design engine but the z32 engine and in general many of which are over 20 years old and covered 100k miles.

 

For that reason alone the engines need to be thoughtfully / sympathetically maintained to ensure they continue to stay in their best condition given the design, age and mileage. Your No1 point "not necessary to change the filter every time" on a Zed engine is at the least badly advised and I will state here loud and clear to all the zed owning viewers do NOT skip the filter change !! However at worse your view could be seen as been drawn from a lack of understanding of the filtration action inside of the filter and a reliability on the pressure relief valve to maintain the oil pressure if the filter medium becomes compromised, of course from that position ( pressure relief valve open ) the filter becomes unfiltered and you will not know.

 

Comments that you have owned cars that have never had an oil change or done 150 k miles without one does of course lend credibility to your argument but I doubt very much a prospective buyer would see it that way, and of course remembering we are discussing the Zed engine here not others with different design.

 

Modern filters have evolved I guess more in line with the use of modern low visc oils and extended service intervals to be competitive in the market place, but adding a modern filter to an old design engine does not change that engine, most owners will be using genuine Nissan filters and I can tell you they have not changed them one bit other than the colour, the after market filter such as the KN have been around for 25 years at least, jeez had one on my 2.8i Capri in the Eighties so don`t believe the hype that they are 2016 generation design because chances are they are not, I would suggest you have paid more for the KN filter than a standard one, so not a saving if you can change it twice using a standard one anyhow for the same or similar cost?

 

The point of oil and filter maintenance is simple, why compromise on what is at the very heart of the engine, its life blood as such, not suggesting wrapping them up in cotton wool or put to bed with a hot water bottle ( some might actually ) but this is basic care and for little cost.

 

 

My recent K&N filter states up to 12000 max miles between filter changes.

 

When fitted to a modern engine. just because they have an application for the Nissan 300zx does not mean anything, the same part number fits a 1966 VW Beetle, 1984 Nissan Micra and more lowly cars, check out the application list here http://www.knfilters.com/search/applications.aspx?prod=HP-2008

 

So its your choice of course but just be careful with how you decide on your maintenance be sure you have all the right data for the what ever engine your dealing with.

 

 

Jeff

The cars I've owned previously have all been old Jeff, most of them older than my Z. A lot of them a lot less powerful and most with a lot higher mileage.

I understand exactly how the filtration system on an oil filter works, I also understand that when a filter becomes full that the oil will bypass it in most cases and shove the dirt straight back through the engine which will damage journals and bearings etc.. I'm simply saying that the oil change intervals being so regular at 3-4000 miles is so low that the particulates in the oil filter aren't going to be very high and so the risk of damage to the engine is minimal, particularly as you say with the longer life span of modern oils and filters.

The filters I use are proven and they only cost about £3 more than an oem one so I go with those out of trust of the brand that I've used for years.

It's a personal choice and opinion that I dont expect anyone to share. I've run a n/a 5.2ltr V8 engine that was highly modified and threw out 550bhp and that engine never suffered as a result of filter changes every second oil change.

 

I'm going by my experiences from all my previous vehicle ownership, I do not have a lack of knowledge or understanding of the filtration system of an oil filter!

I may not have a lot of experience with the Z engine Jeff but i have spent many years turning spanners and maintaining my own vehicles instead of paying someone else to do it as that was the only way I could afford to.

To be honest there's no job I couldn't do on this engine if I had youth on my side still physically. The only reason I wouldn't touch most things now on this engine is due to the crispy nature of a 26 year old wiring loom..

I agree that changing the oil filter on every oil change is the bulletproof way to do things and ultimately you know the filter is clean, I just don't agree that it's 100% necessary if you regularly change oil at such short intervals, use good quality oil and have an engine that doesn't have leaky stem seals or worn rings etc that smoke like dot cotton.

 

I don't expect anyone to do what I do and I'm not offering advice to anyone. Just stating a point that my engines have never suffered any ill or displayed any signs of deterioration over a two oil filter change..

The car I talk about when I said I'd never changed the oil or filter was an old donkey I used for work..

Three years before it failed an Mot due to the rust getting it beyond economic repair but the engine was still sweet! Lol..

Just to be clear about the age of vehicles I have owned, here is a small snapshot of vehicles I've owned.

F regarding nissan bluebird 2.0 zx turbo, G reg Vaughan cavalier, C reg rover SD1 3.5 V8 uprated to 5.2 ltr with high lift valves, Kent kh224 Road rally cam, stroker kit and 720 wizard of NOS nitrous oxide kit running 550bhp.

Ford escort mk2 A reg. Rover SD1 2.6 & 2.3 ltr versions.

To name a few, the newest vehicle I've ever owned is a 2006 nissan xtrail 2.2dci. Most cars I've owned have been eighties and early nineties.

My point is that with any engine its important to look after it and oil is as rightly pointed out the life blood of the engine. However the modern oils are ultra reliable and very hard wearing and the filters are just as good if you use a good quality one. If I feel the oil is well used at the point of change then I will change the filter, however if it isn't very dirty and the filter is relatively new I will use my own judgement on wether the filter requires replacement.

Im not offering advice to anyone, just airing my opinion and experiences in answer to a question.

It's up to the individual to make their own mind upon wether to follow manufacturers guidelines or not.

Just to be clear about the age of vehicles I have owned, here is a small snapshot of vehicles I've owned.

F regarding nissan bluebird 2.0 zx turbo, G reg Vaughan cavalier, C reg rover SD1 3.5 V8 uprated to 5.2 ltr with high lift valves, Kent kh224 Road rally cam, stroker kit and 720 wizard of NOS nitrous oxide kit running 550bhp.

Ford escort mk2 A reg. Rover SD1 2.6 & 2.3 ltr versions.

To name a few, the newest vehicle I've ever owned is a 2006 nissan xtrail 2.2dci. Most cars I've owned have been eighties and early nineties.

My point is that with any engine its important to look after it and oil is as rightly pointed out the life blood of the engine. However the modern oils are ultra reliable and very hard wearing and the filters are just as good if you use a good quality one. If I feel the oil is well used at the point of change then I will change the filter, however if it isn't very dirty and the filter is relatively new I will use my own judgement on wether the filter requires replacement.

Im not offering advice to anyone, just airing my opinion and experiences in answer to a question.

It's up to the individual to make their own mind upon wether to follow manufacturers guidelines or not.

seen this so called in halfrauds for some oil must only that deal around your way coz no deals here so went opie oils instead was cheaper!

 

dan.:confused1:

seen this so called in halfrauds for some oil must only that deal around your way coz no deals here so went opie oils instead was cheaper!

 

dan.:confused1: