Without a doubt 6th is for saving fuel. The circumstances have to be right though and it is possible that using 5th would be better for economy.
Consider that in the home of VW the autobahn is unrestricted in places. Not a bad thing IMO
Gavin
I rarely drive faster than 120kph. On my recent country trip I noticed that whenever I slipped into 6th at, say 110kph, revs drop to ~1800 and fuel economy decreased. I feel most comfortable driving at ~2000rpm which means 3rd gear around town at 60kph, 4th up to 90kph an 5th on the freeway/open road up to 120kph.
6th must be for 140kph on the autobahn.
What are your thoughts/experience?
Without a doubt 6th is for saving fuel. The circumstances have to be right though and it is possible that using 5th would be better for economy.
Consider that in the home of VW the autobahn is unrestricted in places. Not a bad thing IMO
Gavin
This is an interesting question....we drive a five day a week 45 klick each way commute to work,it is on a winding,country road,between two towns...we have no traffic lights,the occassional truck,and generally have a very nice drive to and from work.We often exceed 120 kph,coz its safe and fun,and we use sixth a fair bit.....we are more of the opinion that we dont need fifth gear!.....If we wanna pass,straight from sixth to fourth,give it heaps,a quick visit to fifth if needed ,but usually straight back to sixth. Jennie and I are still getting used to the characteristics of a diesel engine,and a manual box(we have been lazy auto drivers for many years)but it is a fun learning curve!
If we agreed with you.....we would all be wrong
At 110kph in 6th, i'm at about 2200-2400rpm's.
at 100pkh in 6th, i'm at about 2100rpm's.
I too feel most comfortable at 2000+ rpms in any gear.
I shift at 2500 when warming up, and at 3000 when warmed. (and 3000+ when i wanna clean out the exhaust on the ppl sticking up my arse in the left lane)
Jeep Patriot CRD. Same Same, but different...
in terms of fuel economy, I've found 6th is best when using cruise control on a "very" flat road. but if I even do some mild acceleration, or even drive up a slight inline in the road, then the economy gets blown out, and its better to drop a gear.
I'm planing on testing out using 6th and 4th for my daily commute next week, which is a country road, and far from flat.
I'm trying to find the best performance/economy, so far only tested using 6th/5th, and 5th/4th and 5th.
This is an interesting question. I use 6th driving around town at anything above 70Kph. The diesel torque is sufficient to get me going even when around the 1200 rpm.
Golf V TDI 2005 - SOLD
Volvo C30 D5 - I've got a hat as well!
Multivan Highline T5 TDI 4Motion 2005
Hond Civic VTI 2001
On a level road, the min. speeds I use are 70Kph for 5th & 90Kph for 6th. If there is the slightest incline I change down, particularly for these 2 highest gears.
Last edited by jets; 20-03-2009 at 08:09 AM.
Understand how it works, troubleshoot logically BEFORE replacing parts.
2001 T4 TRAKKA Syncro 2.5TDI,2006 Mk5 2.0TDI Golf manual,2001 Polo 1.4 16V manual [now sold], '09 2.0CR TDI Tiguan manual,
Numerous Mk1 Golf diesels
When ever I'm cruising along the highway, freeway, whatever wayI hardly ever drop back from 6th gear, as others have said, with the torque of the diesels you rarely need to, especially on hills
The answer to the original post (why is there a 6th gear ?) would IMO have to be mainly for economy
Russ
Russ
2005 Subaru Outback 3.0 R Premium
It's also to reduce engine noise while cruising & engine wear by turning at slower revs. I wish my T4 Syncro had a 6th gear. While having a low first gear & evenly spaced ratios, it revs a little to high for my liking while cruising[around 2,700 rpm & 110Kph] & probably uses more fuel.
Understand how it works, troubleshoot logically BEFORE replacing parts.
2001 T4 TRAKKA Syncro 2.5TDI,2006 Mk5 2.0TDI Golf manual,2001 Polo 1.4 16V manual [now sold], '09 2.0CR TDI Tiguan manual,
Numerous Mk1 Golf diesels
Just for the record, the DSG shifts to 6th gear at around 80km/h depending on the circumstances. At 115km/h (indicated), my Golf TDI was turning over at 2100RPM or so. The torque is so good, it didn't even shift down when overtaking.
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