Agreed.

There is some **** guff on this tread

 

Just be sensible.
A thinner oil could be chosen i.e. keep away from the 15W stuff in winter.

Driving at 3000 rpm still equates to 70mph plus or minus just be sensible,if you got out of bed,went out side on a cold day in shorts and then tried a personel best in the 100m sprint you would deffo pull a muscle or do alot less performance than if you warmed up properly and then give it go.
Same for any engine.

 

I dont go by water temp, that means absolutely squat when talking about engine temp as oil takes considerably longer to warm than water (water temp can be up there on normal before oil is at 50 deg)
Normally go like this

first 5 miles, 2.5k rpm max, next 5 miles, up to 3k rpm max, then ill take it from there

Tony

 

All these people who've said that leaving the car a good few miles before using boost is ****, I'd like to put one hypothetical situation to you as a litmus test about how important you really think warming up is :

"You see two cars with a view to buy, both identical. You go out in one where the owner takes is easy till the water is up to temp then boosts it two minutes after and the other where the owner apologises for the delay in showing you what it can do, but explains that the oil needs as much as 10 miles to get up to temp properly when cold.

Which one do you buy? Exactly!

BMW think it's important enough to incorporate warnings about letting the oil warm up into their rev counters in the form of a temporarily lowered red line and even they dont generally run the bhp per litre that some scoobies do.

Ns04

 

 

My car has a standard water temp guage, a fuel guage, a rev counter and a mph indicator. Some people swear by a guage for this, a guage for that, knock sensors, turbo timers etc etc etc. The list really does go on.

IMHO there is no need for the stacks of instruments and guages that some people feel they MUST have in the cabin. 10miles to warm an engine up before going over 3k revs, my God, whoever does this must apply surgical gloves before wiping their ****!

I've done well over 100k in a few Imprezas and I've never ruined an engine yet. Oh, 45k of them miles was in a decatted P1 without a remap, go figure

 

Have a look at mine and Harvey's posts in this thread and this should go some way to answering the origional posters question

 

 

I await Lewis' response.

 

I agree with a lot of answers in this thread but to be honest the car may already be seriously damaged already by some clueless previous owner. When I bought my scoob it had 52,000 on the clock. How do I know that for 52,000 miles it was not redlined from the driveway, driven hard everywhere and switched off the moment the wheels touch the drive on return? All the warming and cooling all of us do aint gonna change the past.

For the record, I normally idle on the drive for a couple of mins to warm then take it easy for a couple of miles and do exactly the opposite arriving home. Whether its doing the car any favours I do not know....

 

Nice link!

At the end of the day, drive your car how you want, it's yours afterall.

The experts I have spoken to (I tend to do this as I'm not one ) have all said the same thing off-boost till the engine is warmed properly - and this may take longer than you think.

As Harvey said, it's a big lump of metal and a few miles just isn't enough when it's been cold!

As a interesting aside: if you speak to people who re-build Impreza engines, they will tell you that many fail within a couple of weeks of getting into the hands of a new owner. Quite often -when asked about the circumstances under which the car failed- it will transpire that the owner had sweet FA mechanical sympathy. I well recall one example on here where someone came on with a fubar'd MY99 (big ends gone).

You see: chocolate Impreza engines the usual culprits cried!!

Then the owner admited that he'd been trying to keep up with a mate on his superbike on a motorway and had hit a sustained naughty 3 figure speed, after having done only 3 miles from cold!!!

Ns "No s*it on my hands and my car runs sweet as a nut*" 04

PS Touchwood*!!

PPS All very well people, some of which don't even own scoobies, coming on here telling you not to be a wuss etc

You think they'll chip in for the rebuild?

Me neither!

 

Time to wind this thread up guys....my query has been satisfied with the answers given.

Thank you
The Thread Creator.

 

Cheeky Newbie

 

 

I think the obvious answer is if the engine is still running sweet has healthy cylinder pressures and hasn't blown up yet it's not going to. So you can come to conclusion that under the majority of driving conditions, non of this warming up/cooling down really matters that much.

Yes folks, its the loosely informed SN know it alls, who get a tiny shred of advice and blow it out of proportion. So now every driving excusion is a waiting game of warming and cooling. Living in the paranoia that the slightest thing they do (or don't do) will cause a big end to shoot through the block It's scary, I'm starting to sound like PS Lewis more and more each day

Bottom line: Thrashed engines wear out sooner. And the exact same rule applies for the ones "warmed up" and "cooled down", so don't think that doing this warming/cooling is a justification to thrash it like it was (to quote another hyped up cliche) "designed for". Remember that when blasting it round the lanes.

Also remember that when upping the boost and trying to push that forever movingg BHP goal post with a near stock engine. Unless you have the funds to manage the eventual consequences, in which case go ahead; Swiss cheese those pistons and let those big ends fly.

 

 

3k rpm equates to 70mph, this seems to be the national speed limit in the uk so why exceed it?
Plus it can take upto 10 miles for your oil to get to its normal operating temperature where it gives its best performance, you can rag your car from cold if you want but some people will acutally look after theirs

You forgot to mention the next owner who bought it and had it for 1k miles before the P1 blew up
The simple fact is that hot oil is better than cold oil, though cold oil lubricates still it cannot be passed round the engine as quickly as hot oil.

Tony

 

Thanks for the rep point, which ever spineless weasel posted it without their user name.

 

why the blokes a looser!?!?

 

Let's get some facts straight on here. Firstly my old P1, I bought from new and within 2 hours it was decatted sans remap and has thus far done 65k as my brother bought it off of me 2 years ago. The only thing to have been replaced on the car that was faulty was the battery. There has been no engine issues what-so-ever. I think you may be refering the the 22b I purchased when you're on about the engine going. You may have come across me mentioning it on 22b.com,where correct me if I'm wrong, you had advertised your overpriced typeR for several months

I was about the 5th owner of the 22b and the car had done around 45k before I got into it. I had the car 5 months and did a few careful k's in it. The new owner mentioned he was getting engine work (remap I think) on the car and I advised his to keep things standard as it was when I owned the car. The car was still under warranty from Subaru and I said this may void any claim. A few to a several months later the engine apparently blew. In any case, shoparound for a 22b and ask how many rebuilds each car has had not IF it has had a rebuild.

3k doesn't mean 70 mph at all, don't you have more than 1 gear on your gearbox? Very strange that I may exceed the national speed limit in first gear

Also, where have I said I ragged my car from cold, nowhere that's where. BTW have you ever had an Impreza engine go on you?

You may think that doing 10 miles plus before daring to go over 3k is acceptable practice for looking after the engine, I do not. That's not to say I rag around with the engine cold as you wrongly assume.

 

Could have been the 22b though you didnt say you remapped the P1 which would help with the decat and ive never owned a type R so definately wasnt me (and didnt post my old car on 22b either and that wasnt overpriced when I sold her )

I take it you mean in a 30 zone for exceeding the national speed limit in first??

Never had an engine go on me in any car though 3k rpm with avcs and producing over 220lbs of torque below that.... do I really need to go any quicker? but 3k is a nice speed in my car, probably because it has so much low down torque so I dont need to exceed that

Lots of people wont get above 3k rpm on a normal run, town driving for instance, you dont need more than 3k in moving traffic, though the people you do see just get in and go for the red line in a cold car..... that does engine damage

3k suits my needs when the engine is cold, for you 4k may suit yours, but for warming up 3k is more than enough considering that a cold engine is also less efficient until its warmed up so its also fuel saving

Tony

 

How much do you spend on surgical gloves?

 

Get em free off my sis (shes a paramedic )

Tony