Toro 21199HD
Engine oil for the Toro 21199HD
Short answer
SAE 30 in two bottle sizes on all five listings, and the synthetic changing from 117-0066 to 138-6053 at 407000000.
Verified options
What we have verified
What decides it
The numbers that matter here
- Which synthetic
117-0066 below 407000000, 138-6053 from it
The only oil number on this machine that depends on your serial. Toro prints *OBS* against the older one on the listings that still name it, so it is a superseded number rather than a second option.
- Do not carry a serial between models
405700000, 406577037, 407000000, 410243167 — four machines, four serials
The same two numbers change over at a different point on every machine that straddles the change. A serial that is correct for a 21199 puts a 21199HD on the wrong side of it, and the two model numbers are one letter apart.
- Grade and bottle size
SAE 30 32 oz (38903) or 18 oz (38916), on all five listings
Neither depends on the serial, and the choice between them is quantity rather than fit. With no published sump capacity, neither bottle is “an oil change” until you have read the manual.
- No empty listing here
All five name accessories
Worth stating because two machines in this family have a run that publishes no accessory list at all. On the 21199HD, a listing that names no oil would be a real absence — and there is no such listing.
In detail
Choosing engine oil for this mower
Every one of the 21199HD’s five listings names accessories — there is no empty run on this machine — and every one of them names the same two SAE 30 numbers: 38903 in 32 oz and 38916 in 18 oz. One grade, two quantities, no dependence on your serial.
The full synthetic 10W-30 is the number that moves, from 117-0066 to 138-6053 at 407000000. Three listings sit below that serial and two above it. This machine is the one of its family where that change is already written down properly: the serial-range page for 406000000–406999999 records it as a finding of its own, alongside the blade change at the same serial. This page does not re-argue it.
What this page can say, and a serial-range page cannot, is where that same change lands on everything else. Toro moves this number at a different serial on every machine that straddles it. On the 21200 it is 405700000; on the 20334, 406577037; here, 407000000; on the 21199, 410243167. Four machines, four serials, no two alike — so the supersession is not a date that swept the catalogue on one day, and a serial read off one machine’s page is worth nothing on another’s.
Two more machines this site holds name only the older number wherever it has been opened, and five name only the newer one. Those are statements about the listings, not about which oil a shop will sell you: asking for a discontinued number generally gets you its replacement.
Toro publishes no sump capacity on any of these listings, so how much oil the engine takes stays an engine-manual question.
The mistake we see most
Method
How we established this
We opened all five listings Toro publishes for model 21199HD and recorded which oil numbers each names, then opened the product pages for all four numbers. The four serials compared across models each come from that model’s own matrix, read from two consecutive listings, and not from one machine’s page applied to another.
Same machine
Other parts we have verified for the Toro 21199HD
Other machines
Engine oil on the other mowers we cover
The answer is not the same on every machine, which is the point of checking rather than assuming.
Provenance
Sources
Last verified against these sources on August 29, 2026.
- 1
The Toro Company · Primary source · Accessed August 22, 2026
Lists blade kit 20120P, the 15.4 Inch Atomic Blade, and the obsolete engine oil 117-0066. Toro’s own page title names this machine the Home Depot Rental TimeMaster, which is how it differs from the 21199.
- 2
The Toro Company · Primary source · Accessed August 22, 2026
Lists blade kit 20120P, the 15.4 Inch Atomic Blade, and the obsolete engine oil 117-0066. Toro’s own page title names this machine the Home Depot Rental TimeMaster, which is how it differs from the 21199.
- 3
The Toro Company · Primary source · Accessed August 22, 2026
Lists blade kit 20120P, the 15.4 Inch Atomic Blade, and the obsolete engine oil 117-0066. Toro’s own page title names this machine the Home Depot Rental TimeMaster, which is how it differs from the 21199.
- 4
The Toro Company · Primary source · Accessed August 22, 2026
Lists blade kit 20122P, the 15.4 Inch Hi-Lift Replacement Blade Kit, and engine oil 138-6053 in place of 117-0066. Toro’s own page title names this machine the Home Depot Rental TimeMaster, which is how it differs from the 21199.
- 5
The Toro Company · Primary source · Accessed August 22, 2026
Lists blade kit 20122P, the 15.4 Inch Hi-Lift Replacement Blade Kit, and engine oil 138-6053 in place of 117-0066. Toro’s own page title names this machine the Home Depot Rental TimeMaster, which is how it differs from the 21199.
- 6
Parts — 30in TimeMaster, model 21199, serial range 410243167–411509999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20122P, and does not name 130-8149, 130-8146, 20120P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 7
Parts — 30in TimeMaster Electric Start, model 21200, serial range 405700000–407799999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20122P, and does not name 130-8149, 130-8146, 20120P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 8
Parts — 22in Recycler Lawn Mower, model 20334, serial range 406577037–999999999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 38991, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P, and does not name 20234, 59502, 108-8120. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 9
SAE 30 4-Cycle Lawn Mower Engine Oil 32 oz (Part # 38903)
The Toro Company · Primary source · Accessed August 29, 2026
The number requested, answered without a redirect and with no “Replaces Product” line in either direction. Toro describes it as a mono-grade fluid for high-temperature use and states it “meets or exceeds performance requirements of all OEM products (Toro®, Briggs & Stratton®, Kohler®, Honda® and Tecumseh®)”. It names engine makes and no machine, model or engine number, so it establishes the product and not the fitment.
- 10
SAE 30 4-Cycle Summer Engine Oil 18 oz. (Part # 38916)
The Toro Company · Primary source · Accessed August 29, 2026
The number requested, no redirect and no “Replaces Product” line. Same mono-grade SAE 30 description as 38903 and the same list of engine makes, in an 18 oz. bottle rather than 32 oz. The page is marked “Not Available Online”, which is a statement about Toro’s own checkout and not about whether the oil is listed for a machine. This is the bottle kit 20298 itemizes.
- 11
OIL-30/10W-30 SYNTHETIC CK4 [QT] (Part # 138-6053), served at /product/117-0066
The Toro Company · Primary source · Accessed September 5, 2026
Requesting the 117-0066 product URL serves the page for 138-6053 under the line “Replaces Product 117-0066”, which is Toro stating the oil supersession directly rather than this site inferring it from which number sits against which serial range. Re-read 31 August 2026 and unchanged, and again 5 September 2026. Internal designation OIL-30/10W-30 SYNTHETIC CK4 [QT]. One bullet frames the oil for zero-turn riding mowers (TimeCutter MX, Titan, Titan MX) while the overview calls it the choice for any outdoor power equipment; the page names no walk-behind model. It does state a capacity — the title reads “(32 oz.)” and the first bullet repeats “10W-30 engine oil (32 oz.)” — corrected 5 September 2026 from an earlier reading that missed it.
- 12
OIL-30/10W-30 SYNTHETIC CK4 [QT] (Part # 138-6053)
The Toro Company · Primary source · Accessed August 28, 2026
The same page served at its own number, and it is the same page carrying that one “Replaces Product 117-0066” line — so Toro states the supersession once and either number reaches it, which is not the same as stating it from both directions. This page is now also the source for part 138-6053 itself: batch 13 created the pt_engine_oil category, so the clause that used to sit here — that engine oil is in no category this site records — stopped being true the moment that batch was staged.