Almost everything written about classics and winter is about laying a car up. Driving one through a British winter is the harder question, and it is mostly answered by firms selling protection products. This site sells nothing, so it can give the answer straight: on a TC, TD or TF, winter use is genuinely limited, and the limit is the car rather than the owner.
What winter use actually means on a car like this
A T-Type is an open two-seater with sidescreens rather than wind-up windows, a hood that is a considerable job to erect properly, minimal heating and, for practical purposes, no demisting. None of that is a fault. It is what a 1930s to 1950s sports car is. It does mean the honest answer here is different from the answer for most classics, and pretending otherwise would not serve anyone.
Weather protection is the first limit. With the hood up and the sidescreens in, the car is far better than it is open, yet it is still draughty, and water finds its way past seals that were never watertight when new. Visibility is the second limit, and the more serious one. A cold windscreen in a damp cockpit mists readily, there is no blower of any consequence to clear it, and a single wiper sweeping a small screen in heavy rain and winter dark asks a great deal of the driver.
The distinction that matters is between an hour on a bright frosty morning and using the car as transport. The first is one of the pleasures of ownership: cold, dense air, empty roads, dry salt-free tarmac if you are lucky with the gritters, and a wash-off and a dry garage at the end of it. The second, a wet January commute in the dark, is where a T-Type stops being the right car. That is not gloom, it is scope. Knowing which of the two you are planning makes every other decision on this page straightforward.
Salt, which matters more than any product
If you take one thing from this article, take this: washing the underside after every salted drive matters more than any coating you buy. It is also the step most owners skip, because it is cold, tedious work at exactly the moment you want to put the car away and go indoors.
The reason it matters is chemical rather than cosmetic. Dry salt sitting on metal does little. Salt in solution is an electrolyte, and it keeps accelerating corrosion for as long as it stays damp. A car driven on a salted road and then parked wet in an unheated garage is worse off than a car left standing out in clean rain, because the rain dilutes and the garage does not. The aim of washing is dilution and removal, not shine.
Get plenty of plain water underneath. Chassis rails, spring hangers, the inner faces of wings and valances, around the running boards and every ledge that collects road spray are where the salted slush ends up. An under-car lance, or simply a hose with a long wand and patience on a mild day, does more good than a bucket and sponge on the paint.
A word on jet washes. High pressure removes salt well and it also drives water into places you would rather it did not go: past seals, into seams and joints, into the timber-and-panel junctions of the body, and into electrical connections that were never designed for it. Lower pressure and more water is the safer trade on a car of this age. Whatever you use, the drive is not finished until the car is dry, so allow time for it to dry with air moving around it before it is shut in.
Specific to the T-Type
The ash-framed body
This is the reason winter use is a more serious decision on a T-Type than on a monocoque. The body is a timber frame with panels over it on a separate steel chassis. Water getting into timber is a different problem from steel rusting: it is slower, less visible, and it is not solved by cleaning off the surface. Rather than repeat what is already documented here, read the dedicated page on the construction, why and where it rots, and how to inspect it.
The ash frame: construction, why it rots and where →
Sidescreens and the hood
The hood and sidescreens keep out the worst of the weather rather than all of it. They work best as a set, put up before you set off, in the dry, with time to line everything up. Erecting a T-Type hood at the roadside in wind and rain is a job that takes both hands, several minutes and a degree of patience, and it is invariably attempted at the point when you are already wet. Anyone planning winter use should practise it in the garage until the order of operations is second nature.
Two habits pay off. First, put the hood and sidescreens away dry, because folded damp fabric and trapped moisture in the cockpit are how winter damage happens without a drop of rain falling on the paint. Second, treat the cockpit as somewhere that needs to breathe and dry out after every wet run, not somewhere to be sealed up immediately.
Positive earth electrics and cold starting
These cars are positive earth, which matters whenever you connect a charger, a jump lead or any modern accessory: get the polarity wrong and the damage is expensive and immediate. Check which terminal is earthed on your car before anything is clipped to the battery, and disconnect the earth before electrical work.
Cold starting asks more of everything at once: a battery that is less willing, oil that is thicker, and a mixture that needs enrichment. The dynamo charging system on these cars is modest by modern standards, and short winter runs with lights on can take more out of the battery than the drive puts back. Clean, tight earths and good connections do more for cold starting than anything else, and a weak charging circuit shows itself first in winter. If yours is suspect, start here: the dynamo is not charging, and ignition and charging. For the correct grades and settings for your car, use the Workshop Manual rather than a rule of thumb.
Where these cars rot, and what winter attacks
Winter does not invent new weak points, it accelerates the known ones. Road spray and salted slush find the low, enclosed, hard-to-see places, and the timber-to-steel junctions that a summer car never gets wet enough to trouble. The existing pages on structure and inspection set out where to look; treat them as your winter checklist rather than only a buying checklist.
- The ash frame, the timber structure and where water gets into it.
- What to check on any T-Type, the chassis, body and corrosion points, useful whether you are buying or inspecting your own car in February.
- Chrome and brightwork, which suffers in damp far more than most owners expect.
- Chassis greasing, because washing the underside also washes grease points, and winter use means attending to them more often.
Underbody protection
Underbody products fall into a few families, and understanding the principle is more useful than reading any one manufacturer's claims.
- Wax-based, such as Waxoyl and Dinitrol. Applied thin or warmed so that it creeps into seams and box sections, then left to firm up into a waxy skin that stays put. The strength is durability and the weakness is that a set film can be bridged or damaged, and where it lifts, moisture can sit behind it unseen.
- Lanolin-based, such as Lanoguard. Wool-grease based treatments that stay soft and are intended to be self-healing rather than forming a hard skin, so a stone chip does not leave bare metal. Being soft, they are more readily washed or worn away and are generally re-applied more often.
- Oil-based films, such as Fluid Film. The most mobile of the three, with the greatest creeping ability into seams, laps and cavities, and no set film at all. That mobility is the point and also the compromise: it does not stay where it is put as long as a wax does.
The three axes to compare, then, are creeping ability, whether the product sets or stays soft, and how often it needs renewing. For actual coverage rates, cure conditions and re-application intervals, follow the product's own instructions. This archive is not going to invent figures.
What nobody else says about these products
There is no independent comparative testing of these products worth citing. The advocates for each are sincere, often with years of their own cars behind the opinion, and much of what you will read online is written by people selling something. This site sells nothing, takes nothing from anyone who does, and therefore has no basis on which to tell you which product is best. What it can tell you is that the wash-off routine in the previous section does more for a car than the choice between one coating and another, and that any coating applied over salt and damp is sealing the problem in.
The practical side
Tyres in the cold
Cold roads reduce grip, and the narrow crossply or period-pattern tyres these cars wear were never intended for winter conditions. Pressures read lower in cold weather, so check them with the tyres cold and set them to the figure your handbook gives. Rubber hardens with age as well as with cold, and a car laid up each autumn accumulates years without accumulating miles: tyres that look unworn can be well past being trustworthy. Look for cracking in the sidewalls and shoulders, and judge a tyre by its condition and age rather than its tread.
Lights and being seen
A T-Type is small, low and lit to 1950s standards, on roads full of vehicles lit to modern ones. Winter driving is mostly in poor light, so clean every lens, make sure the reflectors are not dulled, check the aim, and confirm that indicators, brake lights and the rear lamps all work before you set off rather than after. Clean, sound earths matter here as much as bulbs. Being seen is worth more than seeing.
Battery condition with brief, frequent use
Short winter runs with lights on are the hardest possible duty cycle for a dynamo-charged car: a heavy demand at startup, headlamps and ignition drawing throughout, and rarely enough running to put it all back. Frequent short trips can leave a battery slowly falling behind all season. Keep the terminals clean and tight, keep the earth strap sound, and use a maintainer between runs, taking care over polarity on a positive-earth car.
What to carry if it stops
- A torch, and a spare set of the bulbs and fuses your car uses.
- A warm coat, gloves and something waterproof, because a stop in an open car in December is a different experience from a stop in a saloon.
- A high-visibility vest and a warning triangle.
- A basic tool roll for the fasteners your car actually uses, plus insulating tape and wire.
- A charged phone and your recovery details, together with the sense to use them rather than fix a car in the dark on a wet verge.
- Rags, and a spare can of water rather than a guessed-at bottle of anything else.
When not to go out
Some days the right decision is to leave it in the garage, and the list is short enough to be worth stating plainly.
- Ice. Narrow tyres, a light tail, drum brakes all round on most cars, and no modern driver aids of any kind.
- Standing water and flooded lanes. Deep water reaches things on a T-Type that it would not reach on a modern car, and you cannot see what the water is hiding.
- The day after the gritters. Wet, freshly salted roads coat the car in exactly the solution described above, and a treated road is a signal, not an invitation.
- Heavy rain in the dark. A misting screen, one wiper and a small lighted area ahead is not a combination to accept voluntarily.
There is no shame in any of that. A car that is used on the good winter days, washed off properly afterwards and kept dry between times will be in better order in spring than one that was either flogged through January or shut away untouched since October. If you do decide to stop for the season, the companion piece is winter storage: laying up a T-Type.
Questions owners ask
- Can you drive an MG T-Type in winter?
- Yes, and plenty of owners do on dry, cold days. What limits it is not the mechanicals but the weather protection: sidescreens rather than wind-up windows, a hood that takes real effort to erect, very little heating and effectively no demisting. A bright frosty morning is enjoyable. A wet, dark January commute is a different proposition, and most owners conclude the car is not the right tool for it.
- Does road salt damage a classic car?
- Salt itself does not attack metal; salt in solution accelerates corrosion, and it keeps working for as long as it stays damp. That is why a car put away wet and salted is worse off than one left standing in clean rain. Washing the underside thoroughly with plenty of plain water after every salted drive is the single most effective thing an owner can do, and it is the step most often skipped.
- What is the best underbody protection for a classic car?
- This archive cannot tell you, and it is worth being honest about why. The main families are wax-based coatings such as Waxoyl and Dinitrol, lanolin-based treatments such as Lanoguard, and oil-based films such as Fluid Film. They differ in principle rather than in marketing: how far they creep into seams, whether they set to a skin or stay soft, and how often they need renewing. There is no independent comparative testing worth citing, the advocates for each are sincere, and a great deal of what is written online is written by people with something to sell. This site sells nothing and has no basis for naming a winner.
- Should I use my classic car in the winter?
- It depends on the car and on the winter you have in mind. Occasional dry-day use, followed by a proper wash-off and a dry place to stand, does a T-Type no harm and does the mechanicals some good. Regular use on salted, wet roads is a different decision, and on an ash-framed car it is a more serious one than on a monocoque, because water finding its way into timber is a slower and less visible problem than steel rusting. There is no shame in leaving it in the garage.
Read next
This guide is a general introduction and is not a substitute for the official Workshop Manual for your car. This archive is non-commercial and recommends no product or retailer.