MTBJanuary / FebruaryTanqua Karoo, South Africa

Tankwa Trek

Four days through the Great Karoo — extreme heat, dust, isolation.

Official event page →

Distance

~95 km/day over 4 stages (~380 km total)

Elevation

1,800 m climbing

Discipline

MTB

Character. South Africa's most demanding MTB stage race in terms of conditions. Four days through the Tanqua Karoo semi-desert, raced in pairs. Extreme heat, fine dust, remote terrain.

Conditions. Karoo high summer: 30–40 °C, bone dry, fine dust, full sun. One of the hottest stage-race environments on the calendar.

Lube plan

If you wax — ZFC-recommended path. Multi-day plan in extreme heat. A heat-tolerant wax formulation pre-event is the right start; standard waxes soften at Karoo temperatures. Top up each evening with a wax-compatible drip such as Silca Super Secret Drip, applied as soon as you finish the stage so it gets the overnight cure it needs (Silca specify at least 12 hours). Don't try to run multiple stages on one wax application. Carry Synergetic only as insurance if the chain goes dry mid-stage — oil on a waxed chain means a full degrease before you next wax.

If you're on oil — pragmatic equivalent. Heat-rated oil and a rigorous evening cleaning routine. Karoo dust builds into grinding paste in oil — wipe thoroughly before each re-application. Don't skip evenings.

Recommended lubricants

55 lubricants ranked · 6 excluded·Customise this scenario →

Staged recommendation

Multi-day stage race — staged plan

Start each stage on hot-melt wax. Top up between stages with a pot-compatible wax-emulsion drip on dusty days — true wax chemistry, chain drops back in the pot at home with no degrease. Keep an oil in reserve for sustained wet: apply over the wax with a chain-stripper degrease before the next wax accepted up front. The oil-then-wax sequence always requires that solvent reset; treat it as a one-way door.

Wax emulsion drips (SS Drip, UFO Drip v2) are pot-compatible: chain can go back in the wax pot without a reset. Oils (Synergetic, Synerg-E, wet lubes) are NOT compatible with wax chemistry — apply them over wax only when conditions demand it and plan the post-event degrease.

Critical: Do NOT apply grease or heavy wet oils (Muc-Off Hydrodynamic, WD-40, generic mechanic's oils) to a waxed chain. Those contaminate deeply and create a much harder reset than a clean wet-ride oil like Synergetic.

1
Pre-event (24h+ before)
Wax the chain with a top immersive hot-melt
2
Event start
Start clean-waxed — no field action required until conditions change
Verify drivetrain is running silent; re-check chain wear is below 0.5%.
3
Between-stage top-up (dusty day, chain feels dry)
Apply a wax emulsion drip (liquid wax — pot-compatible)
Apply between stages — after a dusty day, evening at the bivouac/hotel, whenever it starts to feel dry. Silca Super Secret Drip's 24 h set time is longer than a stage-race overnight (typically 12–16 h between stages), so the next morning's coat won't be fully hard. Accept the trade-off: a partial top-up on a waxed chain still beats a stripped chain through another stage's contamination. Before dropping the chain back in your hot-melt pot at home, wipe it down with a microfibre cloth and isopropyl alcohol to take off surface contamination — ZFC-recommended to keep the pot clean over many waxes. No solvent degrease required (that's oil territory).
4
Wet-day rescue (sustained wet / rain)
condition: rain or sustained wet
Apply an oil over the wax. Commit to a post-event degrease.
Apply as conditions demand and ride out. ZFC's published wet-ride rescue for waxed chains is Silca Synergetic over the top — it's oil, so it works on contact, no set-time planning. Synergetic returns to the hot-melt pot only via a chain-stripper solvent reset; applying the oil committed you to that reset already, which makes the set-time question moot.
5
Post-event (only if an oil was applied)
Chain-stripper solvent degrease, then re-wax
Wet-weather oil behaves like factory grease. Use a proper chain stripper / solvent (mineral spirits, dedicated chain degreaser) with ultrasonic agitation — boiling water alone won't shift it. Boiling water is the right reset for wax-emulsion drip residue; for oil residue, only solvent works.

Tactics3 applicable · click any to expand

▸Portable wax pot for multi-day travel (hotel-based only)— Pack the Silca waxing station rather than a drip bottle — if the trip stays in powered accommodation.
when: Multi-day trips (stage race / training camp) with nightly hotel / apartment stops and car-supported logistics. NOT for tent / bivvy / wild-camp trips — the station is electric and needs mains power.
- The Silca waxing station is a compact mains-powered melt pot — fits in luggage, plugs into a hotel socket. Full melt in ~15 minutes.
- Requires mains power. For unpowered trips (tent, bivvy, van without hookup), fall back to the multi-pre-waxed-chains + emergency-oil strategy.
- Keeps you on your normal hot-melt workflow end-to-end — no compromise on wear, no drip-bottle decisions.
- Pair with the multi-chain rotation strategy: rotate to a fresh pre-waxed chain daily, re-wax the used ones at the hotel.
Highest-performance travel setup when you're hotel-hopping. Drop back to the drip-top-up / oil-rescue strategies for unpowered trips.
Silca Waxing System (mains-powered)·ZFC Waxing Zen Master Guide v4
▸Silca Super Secret Drip needs 24 h, not 12— Published set time of overnight / 12 h is optimistic in practice — plan for 24 h.
when: Multi-day scenarios where Silca Super Secret Drip is a realistic mid-trip top-up option.
- Real-world experience: Silca Super Secret Drip applied post-ride is still tacky the next morning. Plan for 24 h to fully set, not the published 12 h.
- In a stage race you typically have 12–16 h between stages — too short for a full set cycle. Apply as the chain demands, accept the next morning's coat is partially set rather than fully hard, and trust that a partial top-up beats running dry through another dusty or damp stage.
- If the scenario genuinely offers a full day of rest between rides (rest day mid-camp, planned weather buffer before a wet ride), wait 24 h rather than the published 12 h before committing the chain to that ride.
- Silca Super Secret Drip remains the top pot-compatible drip — this is a set-time nuance, not a compatibility issue. Every other pot-compatible drip tested matches or exceeds its real-world set time; Tru-Tension Tungsten All Weather's 'very short' claim failed to replicate in field testing.
Silca Super Secret Drip review (Test 13)·Experienced-user field note (2026-04-24)
▸SAL-only candidates — worth considering for long gravel— Some ZFC-tested waxes (Squirt Hot Wax, Silca Hot Melt + Endurance Chip variants) have exceptional single-application longevity but aren't in the main wear-block league table. On multi-day gravel, that's worth a second look.
when: Any stage-race or ultra-endurance gravel / MTB scenario where single-application longevity matters more than per-km wear differences.
- Squirt Hot Wax leads ZFC's single-application-longevity (SAL) test at 3,783 km real-world on dry road — further than Cyclowax Race Wax (3,033 km) or Silca Synerg-E (3,138 km).
- These lubes sit outside the main Block 1–6 wear league table because ZFC hasn't run them through the full protocol, so they're excluded from the ranked list above.
- For pure distance-per-wax events, an SAL winner can beat a Block-winner in practice — because the Block winner's wax runs out and you lose all its advantage.
- Worth checking the Excluded section at the bottom of the results, or searching ZFC's SAL data directly if you're optimising for longest uninterrupted wax life.
ZFC Single Application Longevity data (master XLSX)·Squirt Hot Wax review (YouTube)

Top recommendation · Rex Black Diamond Wax — 4+1 Mix (high-concentration / race)

Loading expert commentary…

1
Rex Black Diamond Wax — 4+1 Mix (high-concentration / race)
Immersive waxCompare →
89.9
score
40% B1 + 60% B2
0.002 wear
Single application
—
Approx. chain life
12,146 km
Cost / 6000 km
$124
Why this rank
#1 because: dry gravel/MTB/CX riding is dominated by dry-dust contamination — scoring weights 60% on Block 2 (dry contamination) and 40% on Block 1. Rex Black Diamond Wax — 4+1 Mix (high-concentration / race) is eligible after scenario filtering and its wear (0.002) carried the most weight in its combined score, which — given your priority weights — edges out every other eligible lube.
2
Silca Hot Wax X
Immersive waxWatch review →Compare →
89.0
score
40% B1 + 60% B2
0.000 wear
Single application
1,350 km
Approx. chain life
9,967 km
Cost / 6000 km
$151
Why this rank
#2 because: wear on 40% Block 1 + 60% Block 2 is actually lower than #1 (0.000 vs 0.002), but cost / maintenance tilted the combined score toward Rex Black Diamond Wax — 4+1 Mix (high-concentration / race).
3
Cyclowax Race Wax
Immersive waxCompare →
66.9
score
40% B1 + 60% B2
0.005 wear
Single application
3,033 km
Approx. chain life
29,557 km
Cost / 6000 km
$50.75
Why this rank
#3 because: on 40% Block 1 + 60% Block 2 this lube's wear is 0.005 vs the top pick's 0.002 — Rex Black Diamond Wax — 4+1 Mix (high-concentration / race) pulled ahead on the primary axis. Wear contributed most to this lube's own score.
4
Mspeedwax New Formula
Immersive waxZFC Tier 1Detail review →Compare →
53.4
score
40% B1 + 60% B2
0.007 wear
Single application
1,021 km
Approx. chain life
18,987 km
Cost / 6000 km
$79.00
Why this rank
#4 because: on 40% Block 1 + 60% Block 2 this lube's wear is 0.007 vs the top pick's 0.002 — Rex Black Diamond Wax — 4+1 Mix (high-concentration / race) pulled ahead on the primary axis. Wear contributed most to this lube's own score.
5
Rex Black Diamond Wax — 11+1 Mix (low-concentration / training)
Immersive waxCompare →
44.2
score
40% B1 + 60% B2
0.008 wear
Single application
—
Approx. chain life
13,453 km
Cost / 6000 km
$112
Why this rank
#5 because: on 40% Block 1 + 60% Block 2 this lube's wear is 0.008 vs the top pick's 0.002 — Rex Black Diamond Wax — 4+1 Mix (high-concentration / race) pulled ahead on the primary axis. Wear contributed most to this lube's own score.
6
Silca Hot Melt
Immersive waxZFC Tier 1Detail review →Compare →
38.3
score
40% B1 + 60% B2
0.013 wear
Single application
640 km
Approx. chain life
21,898 km
Cost / 6000 km
$68.50
Why this rank
#6 because: on 40% Block 1 + 60% Block 2 this lube's wear is 0.013 vs the top pick's 0.002 — Rex Black Diamond Wax — 4+1 Mix (high-concentration / race) pulled ahead on the primary axis. Wear contributed most to this lube's own score.
7
Ceramic Speed Ultra Endurance Wax
Immersive waxCompare →
35.6
score
40% B1 + 60% B2
0.011 wear
Single application
—
Approx. chain life
6,742 km
Cost / 6000 km
$222
Why this rank
#7 because: on 40% Block 1 + 60% Block 2 this lube's wear is 0.011 vs the top pick's 0.002 — Rex Black Diamond Wax — 4+1 Mix (high-concentration / race) pulled ahead on the primary axis. Wear contributed most to this lube's own score.
8
Silca + Endurance Chip (*Extended Intervals)
Immersive wax* Extended-interval testCompare →
31.5
score
40% B1 + 60% B2
0.017 wear
Single application
1,746 km
Approx. chain life
14,493 km
Cost / 6000 km
$104
Why this rank
#8 because: on 40% Block 1 + 60% Block 2 this lube's wear is 0.017 vs the top pick's 0.002 — Rex Black Diamond Wax — 4+1 Mix (high-concentration / race) pulled ahead on the primary axis. Low faff contributed most to this lube's own score.
9
Effetto Mariposa Flower Power Wax
Immersive waxDetail review →Compare →
21.9
score
40% B1 + 60% B2
0.037 wear
Single application
1,029 km
Approx. chain life
7,500 km
Cost / 6000 km
$200
Why this rank
#9 because: on 40% Block 1 + 60% Block 2 this lube's wear is 0.037 vs the top pick's 0.002 — Rex Black Diamond Wax — 4+1 Mix (high-concentration / race) pulled ahead on the primary axis. Low faff contributed most to this lube's own score.
10
Finish Line Halo IM Wax
Immersive waxWatch review →Compare →
21.6
score
40% B1 + 60% B2
0.089 wear
Single application
—
Approx. chain life
15,113 km
Cost / 6000 km
$99.25
Why this rank
#10 because: on 40% Block 1 + 60% Block 2 this lube's wear is 0.089 vs the top pick's 0.002 — Rex Black Diamond Wax — 4+1 Mix (high-concentration / race) pulled ahead on the primary axis. Low faff contributed most to this lube's own score.

Excluded for this event (6)

AbsoluteBLACK Graphene Lube — No ZFC wear data for the scenario-relevant test block.
Finish Line Ceramic Wax Lube (unable to extrapolate data) — No ZFC wear data for the scenario-relevant test block.
Immersive Wax + Wax Drip Combo (Silca) — A multi-stage strategy rather than a single product — see the staged plan above.
NO LUBRICANT — Baseline / control entry.
Squirt Hot Wax — No ZFC wear data for the scenario-relevant test block.
Wend Wax Test 1 — Stick Only — No ZFC wear data for the scenario-relevant test block.